Spaces:
Running
Running
Commit ·
8d63dc0
1
Parent(s): 64b4595
update model
Browse files- app.py +70 -3
- basic_models.txt +10 -0
- best_models.txt +0 -10
- description.md +4 -3
- inference.py +671 -547
- tokenizer/__pycache__/__init__.cpython-310.pyc +0 -0
- tokenizer/__pycache__/my_tokenizers.cpython-310.pyc +0 -0
app.py
CHANGED
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@@ -20,7 +20,6 @@ from inference import (
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PeptiVersePredictor,
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read_best_manifest_csv,
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BestRow,
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canon_model,
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)
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try:
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@@ -75,6 +74,74 @@ ASSETS_DATA = ASSETS / "training_data_cleaned"; ASSETS_DATA.mkdir(parents=True
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MODEL_REPO = "ChatterjeeLab/PeptiVerse" # model repo
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DATASET_REPO = "ChatterjeeLab/PeptiVerse" # dataset repo
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def fetch_models_and_data():
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snapshot_download(
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repo_id=MODEL_REPO,
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@@ -94,8 +161,8 @@ def fetch_models_and_data():
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)
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fetch_models_and_data()
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-
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BEST_TXT = Path("
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TRAINING_ROOT = ASSETS_MODELS / "training_classifiers"
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TOKENIZER_DIR = ASSETS_MODELS / "tokenizer"
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PeptiVersePredictor,
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read_best_manifest_csv,
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BestRow,
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)
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try:
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MODEL_REPO = "ChatterjeeLab/PeptiVerse" # model repo
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DATASET_REPO = "ChatterjeeLab/PeptiVerse" # dataset repo
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+
def canon_model(parsed) -> Optional[str]:
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"""Return the bare lowercase model name from a parsed (model, emb_tag) tuple or raw string."""
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if parsed is None:
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return None
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if isinstance(parsed, tuple):
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return parsed[0].lower() if parsed[0] else None
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return str(parsed).lower()
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def get_required_patterns(manifest_path: Path) -> List[str]:
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"""Build allow_patterns from the manifest so we only download what we need."""
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from inference import read_best_manifest_csv, EMB_TAG_TO_FOLDER_SUFFIX
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manifest = read_best_manifest_csv(manifest_path)
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patterns = set()
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patterns.add("tokenizer/new_vocab.txt")
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patterns.add("tokenizer/new_splits.txt")
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patterns.add("training_data_cleaned/**/*.csv")
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for prop_key, row in manifest.items():
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disk_prop = "half_life" if prop_key == "halflife" else prop_key
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for parsed in [row.best_wt, row.best_smiles]:
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if parsed is None:
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continue
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model_name, emb_tag = parsed
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if prop_key == "binding_affinity":
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folder = model_name # e.g. "wt_wt_pooled", "chemberta_smiles_pooled"
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patterns.add(f"training_classifiers/binding_affinity/{folder}/best_model*")
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continue
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# infer emb_tag fallback
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if emb_tag is None:
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emb_tag = "wt" if parsed == row.best_wt else "smiles"
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suffix = EMB_TAG_TO_FOLDER_SUFFIX.get(emb_tag, emb_tag)
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# halflife special cases
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if prop_key == "halflife" and emb_tag == "wt":
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if model_name in {"transformer"}:
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for variant in ["transformer_wt_log", "transformer_wt"]:
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patterns.add(f"training_classifiers/{disk_prop}/{variant}/best_model*")
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continue
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if model_name in {"xgb", "xgb_reg"}:
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patterns.add(f"training_classifiers/{disk_prop}/xgb_wt_log/best_model*")
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continue
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patterns.add(f"training_classifiers/{disk_prop}/{model_name}_{suffix}/best_model*")
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patterns.add(f"training_classifiers/{disk_prop}/{model_name}/best_model*")
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return sorted(patterns)
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def fetch_models_and_data():
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patterns = get_required_patterns(BEST_TXT)
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print(f"Downloading {len(patterns)} targeted pattern(s):")
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for p in patterns:
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print(f" {p}")
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snapshot_download(
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repo_id=MODEL_REPO,
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local_dir=str(ASSETS_MODELS),
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local_dir_use_symlinks=False,
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allow_patterns=patterns,
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)
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"""
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def fetch_models_and_data():
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snapshot_download(
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repo_id=MODEL_REPO,
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)
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fetch_models_and_data()
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"""
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BEST_TXT = Path("basic_models.txt")
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TRAINING_ROOT = ASSETS_MODELS / "training_classifiers"
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TOKENIZER_DIR = ASSETS_MODELS / "tokenizer"
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basic_models.txt
ADDED
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Properties, Best_Model_WT, Best_Model_SMILES, Type, Threshold_WT, Threshold_SMILES,
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Hemolysis, XGB, CNN (chemberta), Classifier, 0.2801, 0.564,
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Non-Fouling, Transformer, XGB (peptideclm), Classifier, 0.57, 0.3892,
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Solubility, CNN, Transformer (peptideclm), Classifier, 0.377, 0.329,
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Permeability (Penetrance), XGB, XGB (chemberta), Classifier, 0.4301, 0.5028,
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Toxicity, -, CNN (chemberta), Classifier, -, 0.49,
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Binding_affinity, wt_wt_pooled, chemberta_smiles_pooled, Regression, -, -,
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Permeability_PAMPA, -, CNN (chemberta), Regression, -, -,
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Permeability_CACO2, -, SVR (chemberta), Regression, -, -,
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Halflife, Transformer, XGB (peptideclm), Regression, -, -,
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best_models.txt
DELETED
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Properties, Best_Model_WT, Best_Model_SMILES, Type, Threshold_WT, Threshold_SMILES,
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Hemolysis, XGB, Transformer, Classifier, 0.2801, 0.4343,
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Non-Fouling, MLP, XGB, Classifier, 0.57, 0.3982,
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Solubility, CNN, -, Classifier, 0.377, -,
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Permeability (Penetrance), XGB, -, Classifier, 0.4301, -,
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Toxicity, -, Transformer, Classifier, -, 0.3401,
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Binding_affinity, unpooled, unpooled, Regression, -, -,
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Permeability_PAMPA, -, CNN, Regression, -, -,
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Permeability_CACO2, -, SVR, Regression, -, -,
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Halflife, xgb_wt_log, xgb_smiles, Regression, -, -,
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description.md
CHANGED
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@@ -16,8 +16,8 @@
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|---|---:|---:|---:|---:|
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| Hemolysis | 4765 | 1311 | 4765 | 1311 |
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| Non-Fouling | 13580 | 3600 | 13580 | 3600 |
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-
| Solubility | 9668 | 8785 |
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-
| Permeability (Penetrance) | 1162 | 1162 |
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| Toxicity | – | – | 5518 | 5518 |
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#### Regression (total N)
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| Permeability (PAMPA) | – | 6869 |
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| Permeability (CACO2) | – | 606 |
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| Half-Life | 130 | 245 |
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-
| Binding Affinity |
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Our models are trained on curated datasets from multiple sources. For detailed cleaning up procedures please refer to our [paper](https://www.biorxiv.org/content/10.64898/2025.12.31.697180v1).
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### Model Training and Weight Hosting
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- More instructions can be found here at [PeptiVersse](https://huggingface.co/ChatterjeeLab/PeptiVerse)
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### 🧪 Physicochemical Properties
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|---|---:|---:|---:|---:|
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| Hemolysis | 4765 | 1311 | 4765 | 1311 |
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| Non-Fouling | 13580 | 3600 | 13580 | 3600 |
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| Solubility | 9668 | 8785 | 9668 | 8785 |
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| Permeability (Penetrance) | 1162 | 1162 | 1162 | 1162 |
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| Toxicity | – | – | 5518 | 5518 |
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#### Regression (total N)
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| Permeability (PAMPA) | – | 6869 |
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| Permeability (CACO2) | – | 606 |
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| Half-Life | 130 | 245 |
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| Binding Affinity | 1433 | 1702 |
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Our models are trained on curated datasets from multiple sources. For detailed cleaning up procedures please refer to our [paper](https://www.biorxiv.org/content/10.64898/2025.12.31.697180v1).
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### Model Training and Weight Hosting
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- More instructions can be found here at [PeptiVersse](https://huggingface.co/ChatterjeeLab/PeptiVerse)
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- Model uncertainty predictions is not supported for the app version, but the code is available at [PeptiVersse](https://huggingface.co/ChatterjeeLab/PeptiVerse) for local deployment.
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### 🧪 Physicochemical Properties
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inference.py
CHANGED
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@@ -1,31 +1,46 @@
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# peptiverse_infer.py
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from __future__ import annotations
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-
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import csv, re, json
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from dataclasses import dataclass
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from pathlib import Path
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from typing import Dict, Optional, Tuple, Any, List
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-
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import numpy as np
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import torch
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import torch.nn as nn
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import joblib
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import xgboost as xgb
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from transformers import EsmModel, EsmTokenizer, AutoModelForMaskedLM
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from tokenizer.my_tokenizers import SMILES_SPE_Tokenizer
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-
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# -----------------------------
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# Manifest
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# -----------------------------
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@dataclass(frozen=True)
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class BestRow:
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property_key: str
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best_wt: Optional[str]
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best_smiles: Optional[str]
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task_type: str
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thr_wt:
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thr_smiles: Optional[float]
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def _none_if_dash(s: str) -> Optional[str]:
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s = _clean(s)
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if s in {"", "-", "
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return None
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return s
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def _float_or_none(s: str) -> Optional[float]:
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s = _clean(s)
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if s in {"", "-", "
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return None
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return float(s)
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def normalize_property_key(name: str) -> str:
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n = name.strip().lower()
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n = re.sub(r"\s*\(.*?\)\s*", "", n)
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n = n.replace("-", "_").replace(" ", "_")
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-
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if "permeability" in n and "pampa" not in n and "caco" not in n:
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return "permeability_penetrance"
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if n == "binding_affinity":
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return n
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def read_best_manifest_csv(path: str | Path) -> Dict[str, BestRow]:
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-
"""
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Properties, Best_Model_WT, Best_Model_SMILES, Type, Threshold_WT, Threshold_SMILES,
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Hemolysis, SVM, SGB, Classifier, 0.2801, 0.2223,
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"""
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p = Path(path)
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out: Dict[str, BestRow] = {}
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continue
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prop_key = normalize_property_key(prop_raw)
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row = BestRow(
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property_key=prop_key,
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best_wt=
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best_smiles=
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task_type=_clean(rec.get("Type", "Classifier")),
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thr_wt=_float_or_none(rec.get("Threshold_WT", "")),
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thr_smiles=_float_or_none(rec.get("Threshold_SMILES", "")),
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return out
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-
MODEL_ALIAS = {
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"SVM": "svm_gpu",
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"SVR": "svr",
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"ENET": "enet_gpu",
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"CNN": "cnn",
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"MLP": "mlp",
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"TRANSFORMER": "transformer",
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"XGB": "xgb",
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"XGB_REG": "xgb_reg",
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"POOLED": "pooled",
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"UNPOOLED": "unpooled",
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"TRANSFORMER_WT_LOG": "transformer_wt_log",
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}
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def canon_model(label: Optional[str]) -> Optional[str]:
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if label is None:
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return None
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k = label.strip().upper()
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return MODEL_ALIAS.get(k, label.strip().lower())
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-
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-
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# -----------------------------
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# Generic artifact loading
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# -----------------------------
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def find_best_artifact(model_dir: Path) -> Path:
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for pat in ["best_model.json", "best_model.pt", "best_model*.joblib"
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hits = sorted(model_dir.glob(pat))
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if hits:
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return hits[0]
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raise FileNotFoundError(f"No best_model artifact found in {model_dir}")
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def load_artifact(model_dir: Path, device: torch.device) -> Tuple[str, Any, Path]:
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art = find_best_artifact(model_dir)
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-
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if art.suffix == ".json":
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booster = xgb.Booster()
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print(str(art))
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booster.load_model(str(art))
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return "xgb", booster, art
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-
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if art.suffix == ".joblib":
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obj = joblib.load(art)
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return "joblib", obj, art
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-
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if art.suffix == ".pt":
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ckpt = torch.load(art, map_location=device, weights_only=False)
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return "torch_ckpt", ckpt, art
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raise ValueError(f"Unknown artifact type: {art}")
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# NN architectures
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# -----------------------------
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class MaskedMeanPool(nn.Module):
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def forward(self, X, M):
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Mf = M.unsqueeze(-1).float()
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denom = Mf.sum(dim=1).clamp(min=1.0)
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super().__init__()
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self.pool = MaskedMeanPool()
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self.net = nn.Sequential(
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def forward(self, X, M):
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class CNNHead(nn.Module):
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def __init__(self, in_ch, c=256, k=5, layers=2, dropout=0.1):
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super().__init__()
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for _ in range(layers):
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nn.GELU(),
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nn.Dropout(dropout)]
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ch = c
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self.conv = nn.Sequential(*blocks)
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self.head = nn.Linear(c, 1)
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def forward(self, X, M):
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Mf = M.unsqueeze(-1).float()
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)
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self.enc = nn.TransformerEncoder(enc_layer, num_layers=layers)
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self.head = nn.Linear(d_model, 1)
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def forward(self, X, M):
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Mf = M.unsqueeze(-1).float()
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return self.head(pooled).squeeze(-1)
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def _infer_in_dim_from_sd(sd: dict, model_name: str) -> int:
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if model_name == "
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if model_name == "transformer":
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raise ValueError(model_name)
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def build_torch_model_from_ckpt(model_name: str, ckpt: dict, device: torch.device) -> nn.Module:
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params = ckpt["best_params"]
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sd
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in_dim = int(ckpt.get("in_dim", _infer_in_dim_from_sd(sd, model_name)))
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dropout = float(params.get("dropout", 0.1))
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model = CNNHead(in_ch=in_dim, c=int(params["channels"]), k=int(params["kernel"]),
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layers=int(params["layers"]), dropout=dropout)
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elif model_name == "transformer":
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or params.get("hidden")
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or params.get("hidden_dim")
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)
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if d_model is None:
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)
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-
model = TransformerHead(
|
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in_dim=in_dim,
|
| 254 |
-
d_model=int(d_model),
|
| 255 |
-
nhead=int(params["nhead"]),
|
| 256 |
-
layers=int(params["layers"]),
|
| 257 |
-
ff=int(params.get("ff", 4 * int(d_model))),
|
| 258 |
-
dropout=dropout
|
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-
)
|
| 260 |
else:
|
| 261 |
raise ValueError(f"Unknown NN model_name={model_name}")
|
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|
| 263 |
model.load_state_dict(sd)
|
| 264 |
-
model.to(device)
|
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-
model.eval()
|
| 266 |
return model
|
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|
| 269 |
# -----------------------------
|
| 270 |
-
#
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# -----------------------------
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|
| 272 |
def affinity_to_class(y: float) -> int:
|
| 273 |
-
# 0=High(>=9), 1=Moderate(7-9), 2=Low(<7)
|
| 274 |
if y >= 9.0: return 0
|
| 275 |
if y < 7.0: return 2
|
| 276 |
return 1
|
|
@@ -280,38 +401,31 @@ class CrossAttnPooled(nn.Module):
|
|
| 280 |
super().__init__()
|
| 281 |
self.t_proj = nn.Sequential(nn.Linear(Ht, hidden), nn.LayerNorm(hidden))
|
| 282 |
self.b_proj = nn.Sequential(nn.Linear(Hb, hidden), nn.LayerNorm(hidden))
|
| 283 |
-
|
| 284 |
self.layers = nn.ModuleList([])
|
| 285 |
for _ in range(n_layers):
|
| 286 |
self.layers.append(nn.ModuleDict({
|
| 287 |
"attn_tb": nn.MultiheadAttention(hidden, n_heads, dropout=dropout, batch_first=False),
|
| 288 |
"attn_bt": nn.MultiheadAttention(hidden, n_heads, dropout=dropout, batch_first=False),
|
| 289 |
-
"n1t": nn.LayerNorm(hidden),
|
| 290 |
-
"
|
| 291 |
-
"n1b": nn.LayerNorm(hidden),
|
| 292 |
-
"n2b": nn.LayerNorm(hidden),
|
| 293 |
"fft": nn.Sequential(nn.Linear(hidden, 4*hidden), nn.GELU(), nn.Dropout(dropout), nn.Linear(4*hidden, hidden)),
|
| 294 |
"ffb": nn.Sequential(nn.Linear(hidden, 4*hidden), nn.GELU(), nn.Dropout(dropout), nn.Linear(4*hidden, hidden)),
|
| 295 |
}))
|
| 296 |
-
|
| 297 |
self.shared = nn.Sequential(nn.Linear(2*hidden, hidden), nn.GELU(), nn.Dropout(dropout))
|
| 298 |
self.reg = nn.Linear(hidden, 1)
|
| 299 |
self.cls = nn.Linear(hidden, 3)
|
| 300 |
|
| 301 |
def forward(self, t_vec, b_vec):
|
| 302 |
-
t = self.t_proj(t_vec).unsqueeze(0)
|
| 303 |
-
b = self.b_proj(b_vec).unsqueeze(0)
|
| 304 |
for L in self.layers:
|
| 305 |
t_attn, _ = L["attn_tb"](t, b, b)
|
| 306 |
t = L["n1t"]((t + t_attn).transpose(0,1)).transpose(0,1)
|
| 307 |
t = L["n2t"]((t + L["fft"](t)).transpose(0,1)).transpose(0,1)
|
| 308 |
-
|
| 309 |
b_attn, _ = L["attn_bt"](b, t, t)
|
| 310 |
b = L["n1b"]((b + b_attn).transpose(0,1)).transpose(0,1)
|
| 311 |
b = L["n2b"]((b + L["ffb"](b)).transpose(0,1)).transpose(0,1)
|
| 312 |
-
|
| 313 |
-
z = torch.cat([t[0], b[0]], dim=-1)
|
| 314 |
-
h = self.shared(z)
|
| 315 |
return self.reg(h).squeeze(-1), self.cls(h)
|
| 316 |
|
| 317 |
class CrossAttnUnpooled(nn.Module):
|
|
@@ -319,344 +433,247 @@ class CrossAttnUnpooled(nn.Module):
|
|
| 319 |
super().__init__()
|
| 320 |
self.t_proj = nn.Sequential(nn.Linear(Ht, hidden), nn.LayerNorm(hidden))
|
| 321 |
self.b_proj = nn.Sequential(nn.Linear(Hb, hidden), nn.LayerNorm(hidden))
|
| 322 |
-
|
| 323 |
self.layers = nn.ModuleList([])
|
| 324 |
for _ in range(n_layers):
|
| 325 |
self.layers.append(nn.ModuleDict({
|
| 326 |
"attn_tb": nn.MultiheadAttention(hidden, n_heads, dropout=dropout, batch_first=True),
|
| 327 |
"attn_bt": nn.MultiheadAttention(hidden, n_heads, dropout=dropout, batch_first=True),
|
| 328 |
-
"n1t": nn.LayerNorm(hidden),
|
| 329 |
-
"
|
| 330 |
-
"n1b": nn.LayerNorm(hidden),
|
| 331 |
-
"n2b": nn.LayerNorm(hidden),
|
| 332 |
"fft": nn.Sequential(nn.Linear(hidden, 4*hidden), nn.GELU(), nn.Dropout(dropout), nn.Linear(4*hidden, hidden)),
|
| 333 |
"ffb": nn.Sequential(nn.Linear(hidden, 4*hidden), nn.GELU(), nn.Dropout(dropout), nn.Linear(4*hidden, hidden)),
|
| 334 |
}))
|
| 335 |
-
|
| 336 |
self.shared = nn.Sequential(nn.Linear(2*hidden, hidden), nn.GELU(), nn.Dropout(dropout))
|
| 337 |
self.reg = nn.Linear(hidden, 1)
|
| 338 |
self.cls = nn.Linear(hidden, 3)
|
| 339 |
|
| 340 |
def _masked_mean(self, X, M):
|
| 341 |
Mf = M.unsqueeze(-1).float()
|
| 342 |
-
|
| 343 |
-
return (X * Mf).sum(dim=1) / denom
|
| 344 |
|
| 345 |
def forward(self, T, Mt, B, Mb):
|
| 346 |
-
T = self.t_proj(T)
|
| 347 |
-
|
| 348 |
-
kp_t = ~Mt
|
| 349 |
-
kp_b = ~Mb
|
| 350 |
-
|
| 351 |
for L in self.layers:
|
| 352 |
T_attn, _ = L["attn_tb"](T, Bx, Bx, key_padding_mask=kp_b)
|
| 353 |
-
T = L["n1t"](T + T_attn)
|
| 354 |
-
T = L["n2t"](T + L["fft"](T))
|
| 355 |
-
|
| 356 |
B_attn, _ = L["attn_bt"](Bx, T, T, key_padding_mask=kp_t)
|
| 357 |
-
Bx = L["n1b"](Bx + B_attn)
|
| 358 |
-
|
| 359 |
-
|
| 360 |
-
t_pool = self._masked_mean(T, Mt)
|
| 361 |
-
b_pool = self._masked_mean(Bx, Mb)
|
| 362 |
-
z = torch.cat([t_pool, b_pool], dim=-1)
|
| 363 |
-
h = self.shared(z)
|
| 364 |
return self.reg(h).squeeze(-1), self.cls(h)
|
| 365 |
|
| 366 |
def load_binding_model(best_model_pt: Path, pooled_or_unpooled: str, device: torch.device) -> nn.Module:
|
| 367 |
ckpt = torch.load(best_model_pt, map_location=device, weights_only=False)
|
| 368 |
params = ckpt["best_params"]
|
| 369 |
-
sd
|
| 370 |
-
|
| 371 |
-
# infer Ht/Hb from projection weights
|
| 372 |
Ht = int(sd["t_proj.0.weight"].shape[1])
|
| 373 |
Hb = int(sd["b_proj.0.weight"].shape[1])
|
| 374 |
-
|
| 375 |
-
|
| 376 |
-
|
| 377 |
-
|
| 378 |
-
|
| 379 |
-
n_layers=int(params["n_layers"]),
|
| 380 |
-
dropout=float(params["dropout"]),
|
| 381 |
-
)
|
| 382 |
-
|
| 383 |
-
if pooled_or_unpooled == "pooled":
|
| 384 |
-
model = CrossAttnPooled(**common)
|
| 385 |
-
elif pooled_or_unpooled == "unpooled":
|
| 386 |
-
model = CrossAttnUnpooled(**common)
|
| 387 |
-
else:
|
| 388 |
-
raise ValueError(pooled_or_unpooled)
|
| 389 |
-
|
| 390 |
model.load_state_dict(sd)
|
| 391 |
-
model.to(device).eval()
|
| 392 |
-
return model
|
| 393 |
|
| 394 |
|
| 395 |
# -----------------------------
|
| 396 |
# Embedding generation
|
| 397 |
# -----------------------------
|
| 398 |
def _safe_isin(ids: torch.Tensor, test_ids: torch.Tensor) -> torch.Tensor:
|
| 399 |
-
"""
|
| 400 |
-
Pytorch patch
|
| 401 |
-
"""
|
| 402 |
if hasattr(torch, "isin"):
|
| 403 |
return torch.isin(ids, test_ids)
|
| 404 |
-
# Fallback: compare against each special id
|
| 405 |
-
# (B,L,1) == (1,1,K) -> (B,L,K)
|
| 406 |
return (ids.unsqueeze(-1) == test_ids.view(1, 1, -1)).any(dim=-1)
|
| 407 |
-
|
| 408 |
class SMILESEmbedder:
|
| 409 |
-
|
| 410 |
-
|
| 411 |
-
- pooled(): mean over tokens where attention_mask==1 AND token_id not in SPECIAL_IDS
|
| 412 |
-
- unpooled(): returns token embeddings filtered to valid tokens (specials removed),
|
| 413 |
-
plus a 1-mask of length Li (since already filtered).
|
| 414 |
-
"""
|
| 415 |
-
def __init__(
|
| 416 |
-
self,
|
| 417 |
-
device: torch.device,
|
| 418 |
-
vocab_path: str,
|
| 419 |
-
splits_path: str,
|
| 420 |
-
clm_name: str = "aaronfeller/PeptideCLM-23M-all",
|
| 421 |
-
max_len: int = 512,
|
| 422 |
-
use_cache: bool = True,
|
| 423 |
-
):
|
| 424 |
self.device = device
|
| 425 |
self.max_len = max_len
|
| 426 |
self.use_cache = use_cache
|
| 427 |
-
|
| 428 |
self.tokenizer = SMILES_SPE_Tokenizer(vocab_path, splits_path)
|
| 429 |
self.model = AutoModelForMaskedLM.from_pretrained(clm_name).roformer.to(device).eval()
|
| 430 |
-
|
| 431 |
self.special_ids = self._get_special_ids(self.tokenizer)
|
| 432 |
self.special_ids_t = (torch.tensor(self.special_ids, device=device, dtype=torch.long)
|
| 433 |
-
if
|
| 434 |
-
|
| 435 |
self._cache_pooled: Dict[str, torch.Tensor] = {}
|
| 436 |
self._cache_unpooled: Dict[str, Tuple[torch.Tensor, torch.Tensor]] = {}
|
| 437 |
|
| 438 |
@staticmethod
|
| 439 |
def _get_special_ids(tokenizer) -> List[int]:
|
| 440 |
-
cand = [
|
| 441 |
-
|
| 442 |
-
getattr(tokenizer, "cls_token_id", None),
|
| 443 |
-
getattr(tokenizer, "sep_token_id", None),
|
| 444 |
-
getattr(tokenizer, "bos_token_id", None),
|
| 445 |
-
getattr(tokenizer, "eos_token_id", None),
|
| 446 |
-
getattr(tokenizer, "mask_token_id", None),
|
| 447 |
-
]
|
| 448 |
return sorted({int(x) for x in cand if x is not None})
|
| 449 |
|
| 450 |
-
def _tokenize(self, smiles_list
|
| 451 |
-
tok = self.tokenizer(
|
| 452 |
-
|
| 453 |
-
|
| 454 |
-
padding=True,
|
| 455 |
-
truncation=True,
|
| 456 |
-
max_length=self.max_len,
|
| 457 |
-
)
|
| 458 |
-
for k in tok:
|
| 459 |
-
tok[k] = tok[k].to(self.device)
|
| 460 |
if "attention_mask" not in tok:
|
| 461 |
tok["attention_mask"] = torch.ones_like(tok["input_ids"], dtype=torch.long, device=self.device)
|
| 462 |
return tok
|
| 463 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 464 |
@torch.no_grad()
|
| 465 |
def pooled(self, smiles: str) -> torch.Tensor:
|
| 466 |
s = smiles.strip()
|
| 467 |
-
if self.use_cache and s in self._cache_pooled:
|
| 468 |
-
|
|
|
|
|
|
|
|
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|
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|
|
|
|
|
| 469 |
|
|
|
|
|
|
|
|
|
|
|
|
|
| 470 |
tok = self._tokenize([s])
|
| 471 |
-
|
| 472 |
-
|
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|
|
|
|
|
|
|
|
|
|
| 473 |
|
| 474 |
-
out = self.model(input_ids=ids, attention_mask=tok["attention_mask"])
|
| 475 |
-
h = out.last_hidden_state # (1,L,H)
|
| 476 |
|
| 477 |
-
|
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|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 478 |
if self.special_ids_t is not None and self.special_ids_t.numel() > 0:
|
| 479 |
valid = valid & (~_safe_isin(ids, self.special_ids_t))
|
|
|
|
| 480 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 481 |
vf = valid.unsqueeze(-1).float()
|
| 482 |
-
|
| 483 |
-
|
| 484 |
-
pooled = summed / denom # (1,H)
|
| 485 |
-
|
| 486 |
-
if self.use_cache:
|
| 487 |
-
self._cache_pooled[s] = pooled
|
| 488 |
return pooled
|
| 489 |
|
| 490 |
@torch.no_grad()
|
| 491 |
def unpooled(self, smiles: str) -> Tuple[torch.Tensor, torch.Tensor]:
|
| 492 |
-
"""
|
| 493 |
-
Returns:
|
| 494 |
-
X: (1, Li, H) float32 on device
|
| 495 |
-
M: (1, Li) bool on device
|
| 496 |
-
where Li excludes padding + special tokens.
|
| 497 |
-
"""
|
| 498 |
s = smiles.strip()
|
| 499 |
-
if self.use_cache and s in self._cache_unpooled:
|
| 500 |
-
return self._cache_unpooled[s]
|
| 501 |
-
|
| 502 |
tok = self._tokenize([s])
|
| 503 |
-
|
| 504 |
-
|
| 505 |
-
|
| 506 |
-
out = self.model(input_ids=ids, attention_mask=tok["attention_mask"])
|
| 507 |
-
h = out.last_hidden_state # (1,L,H)
|
| 508 |
-
|
| 509 |
-
valid = attn
|
| 510 |
-
if self.special_ids_t is not None and self.special_ids_t.numel() > 0:
|
| 511 |
-
valid = valid & (~_safe_isin(ids, self.special_ids_t))
|
| 512 |
-
|
| 513 |
-
# filter valid tokens
|
| 514 |
-
keep = valid[0] # (L,)
|
| 515 |
-
X = h[:, keep, :] # (1,Li,H)
|
| 516 |
M = torch.ones((1, X.shape[1]), dtype=torch.bool, device=self.device)
|
| 517 |
-
|
| 518 |
-
if self.use_cache:
|
| 519 |
-
self._cache_unpooled[s] = (X, M)
|
| 520 |
return X, M
|
| 521 |
|
| 522 |
|
| 523 |
class WTEmbedder:
|
| 524 |
-
""
|
| 525 |
-
ESM2 embeddings for AA sequences.
|
| 526 |
-
- pooled(): mean over tokens where attention_mask==1 AND token_id not in {CLS, EOS, PAD,...}
|
| 527 |
-
- unpooled(): returns token embeddings filtered to valid tokens (specials removed),
|
| 528 |
-
plus a 1-mask of length Li (since already filtered).
|
| 529 |
-
"""
|
| 530 |
-
def __init__(
|
| 531 |
-
self,
|
| 532 |
-
device: torch.device,
|
| 533 |
-
esm_name: str = "facebook/esm2_t33_650M_UR50D",
|
| 534 |
-
max_len: int = 1022,
|
| 535 |
-
use_cache: bool = True,
|
| 536 |
-
):
|
| 537 |
self.device = device
|
| 538 |
self.max_len = max_len
|
| 539 |
self.use_cache = use_cache
|
| 540 |
-
|
| 541 |
self.tokenizer = EsmTokenizer.from_pretrained(esm_name)
|
| 542 |
self.model = EsmModel.from_pretrained(esm_name, add_pooling_layer=False).to(device).eval()
|
| 543 |
-
|
| 544 |
self.special_ids = self._get_special_ids(self.tokenizer)
|
| 545 |
self.special_ids_t = (torch.tensor(self.special_ids, device=device, dtype=torch.long)
|
| 546 |
-
if
|
| 547 |
-
|
| 548 |
self._cache_pooled: Dict[str, torch.Tensor] = {}
|
| 549 |
self._cache_unpooled: Dict[str, Tuple[torch.Tensor, torch.Tensor]] = {}
|
| 550 |
|
| 551 |
@staticmethod
|
| 552 |
def _get_special_ids(tokenizer) -> List[int]:
|
| 553 |
-
cand = [
|
| 554 |
-
|
| 555 |
-
getattr(tokenizer, "cls_token_id", None),
|
| 556 |
-
getattr(tokenizer, "sep_token_id", None),
|
| 557 |
-
getattr(tokenizer, "bos_token_id", None),
|
| 558 |
-
getattr(tokenizer, "eos_token_id", None),
|
| 559 |
-
getattr(tokenizer, "mask_token_id", None),
|
| 560 |
-
]
|
| 561 |
return sorted({int(x) for x in cand if x is not None})
|
| 562 |
|
| 563 |
-
def _tokenize(self, seq_list
|
| 564 |
-
tok = self.tokenizer(
|
| 565 |
-
|
| 566 |
-
return_tensors="pt",
|
| 567 |
-
padding=True,
|
| 568 |
-
truncation=True,
|
| 569 |
-
max_length=self.max_len,
|
| 570 |
-
)
|
| 571 |
tok = {k: v.to(self.device) for k, v in tok.items()}
|
| 572 |
if "attention_mask" not in tok:
|
| 573 |
tok["attention_mask"] = torch.ones_like(tok["input_ids"], dtype=torch.long, device=self.device)
|
| 574 |
return tok
|
| 575 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 576 |
@torch.no_grad()
|
| 577 |
def pooled(self, seq: str) -> torch.Tensor:
|
| 578 |
s = seq.strip()
|
| 579 |
-
if self.use_cache and s in self._cache_pooled:
|
| 580 |
-
return self._cache_pooled[s]
|
| 581 |
-
|
| 582 |
tok = self._tokenize([s])
|
| 583 |
-
|
| 584 |
-
|
| 585 |
-
|
| 586 |
-
out = self.model(**tok)
|
| 587 |
-
h = out.last_hidden_state # (1,L,H)
|
| 588 |
-
|
| 589 |
-
valid = attn
|
| 590 |
-
if self.special_ids_t is not None and self.special_ids_t.numel() > 0:
|
| 591 |
-
valid = valid & (~_safe_isin(ids, self.special_ids_t))
|
| 592 |
-
|
| 593 |
vf = valid.unsqueeze(-1).float()
|
| 594 |
-
|
| 595 |
-
|
| 596 |
-
pooled = summed / denom # (1,H)
|
| 597 |
-
|
| 598 |
-
if self.use_cache:
|
| 599 |
-
self._cache_pooled[s] = pooled
|
| 600 |
return pooled
|
| 601 |
|
| 602 |
@torch.no_grad()
|
| 603 |
def unpooled(self, seq: str) -> Tuple[torch.Tensor, torch.Tensor]:
|
| 604 |
-
"""
|
| 605 |
-
Returns:
|
| 606 |
-
X: (1, Li, H) float32 on device
|
| 607 |
-
M: (1, Li) bool on device
|
| 608 |
-
where Li excludes padding + special tokens.
|
| 609 |
-
"""
|
| 610 |
s = seq.strip()
|
| 611 |
-
if self.use_cache and s in self._cache_unpooled:
|
| 612 |
-
return self._cache_unpooled[s]
|
| 613 |
-
|
| 614 |
tok = self._tokenize([s])
|
| 615 |
-
|
| 616 |
-
|
| 617 |
-
|
| 618 |
-
out = self.model(**tok)
|
| 619 |
-
h = out.last_hidden_state # (1,L,H)
|
| 620 |
-
|
| 621 |
-
valid = attn
|
| 622 |
-
if self.special_ids_t is not None and self.special_ids_t.numel() > 0:
|
| 623 |
-
valid = valid & (~_safe_isin(ids, self.special_ids_t))
|
| 624 |
-
|
| 625 |
-
keep = valid[0] # (L,)
|
| 626 |
-
X = h[:, keep, :] # (1,Li,H)
|
| 627 |
M = torch.ones((1, X.shape[1]), dtype=torch.bool, device=self.device)
|
| 628 |
-
|
| 629 |
-
if self.use_cache:
|
| 630 |
-
self._cache_unpooled[s] = (X, M)
|
| 631 |
return X, M
|
| 632 |
|
| 633 |
-
def _clean_state_dict(sd: dict) -> dict:
|
| 634 |
-
# just for wt halflife transformer predictor
|
| 635 |
-
out = {}
|
| 636 |
-
for k, v in sd.items():
|
| 637 |
-
if k.startswith("module."):
|
| 638 |
-
k = k[len("module."):]
|
| 639 |
-
if k.startswith("model."):
|
| 640 |
-
k = k[len("model."):]
|
| 641 |
-
out[k] = v
|
| 642 |
-
return out
|
| 643 |
-
|
| 644 |
|
| 645 |
# -----------------------------
|
| 646 |
# Predictor
|
| 647 |
# -----------------------------
|
|
|
|
| 648 |
class PeptiVersePredictor:
|
| 649 |
-
"""
|
| 650 |
-
- loads best models from training_classifiers/
|
| 651 |
-
- computes embeddings as needed (pooled/unpooled)
|
| 652 |
-
- supports: xgb, joblib(ENET/SVM/SVR), NN(mlp/cnn/transformer), binding pooled/unpooled.
|
| 653 |
-
"""
|
| 654 |
def __init__(
|
| 655 |
self,
|
| 656 |
manifest_path: str | Path,
|
| 657 |
classifier_weight_root: str | Path,
|
| 658 |
esm_name="facebook/esm2_t33_650M_UR50D",
|
| 659 |
clm_name="aaronfeller/PeptideCLM-23M-all",
|
|
|
|
| 660 |
smiles_vocab="tokenizer/new_vocab.txt",
|
| 661 |
smiles_splits="tokenizer/new_splits.txt",
|
| 662 |
device: Optional[str] = None,
|
|
@@ -667,291 +684,398 @@ class PeptiVersePredictor:
|
|
| 667 |
|
| 668 |
self.manifest = read_best_manifest_csv(manifest_path)
|
| 669 |
|
| 670 |
-
self.wt_embedder
|
| 671 |
-
self.smiles_embedder
|
| 672 |
-
|
| 673 |
-
|
|
|
|
| 674 |
|
| 675 |
-
self.models:
|
| 676 |
-
self.meta:
|
|
|
|
|
|
|
| 677 |
|
| 678 |
self._load_all_best_models()
|
| 679 |
|
| 680 |
-
def
|
| 681 |
-
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 682 |
disk_prop = "half_life" if prop_key == "halflife" else prop_key
|
| 683 |
base = self.training_root / disk_prop
|
| 684 |
|
| 685 |
-
|
| 686 |
-
if prop_key == "halflife" and model_name in {"xgb_wt_log", "xgb_smiles"}:
|
| 687 |
-
d = base / model_name
|
| 688 |
-
if d.exists():
|
| 689 |
-
return d
|
| 690 |
|
| 691 |
-
if prop_key == "halflife" and
|
| 692 |
-
|
| 693 |
-
|
| 694 |
-
|
|
|
|
|
|
|
|
|
|
| 695 |
|
| 696 |
candidates = [
|
| 697 |
-
base / f"{model_name}_{
|
| 698 |
base / model_name,
|
| 699 |
]
|
| 700 |
-
if mode == "wt":
|
| 701 |
-
candidates += [base / f"{model_name}_wt"]
|
| 702 |
-
if mode == "smiles":
|
| 703 |
-
candidates += [base / f"{model_name}_smiles"]
|
| 704 |
-
|
| 705 |
for d in candidates:
|
| 706 |
-
if d.exists():
|
| 707 |
-
return d
|
| 708 |
|
| 709 |
raise FileNotFoundError(
|
| 710 |
-
f"Cannot find model
|
| 711 |
)
|
| 712 |
|
| 713 |
-
|
| 714 |
def _load_all_best_models(self):
|
| 715 |
for prop_key, row in self.manifest.items():
|
| 716 |
-
for
|
| 717 |
-
("wt",
|
| 718 |
-
("smiles", row.best_smiles,
|
| 719 |
]:
|
| 720 |
-
|
| 721 |
-
if m is None:
|
| 722 |
continue
|
|
|
|
| 723 |
|
| 724 |
-
#
|
| 725 |
if prop_key == "binding_affinity":
|
| 726 |
-
|
| 727 |
-
pooled_or_unpooled =
|
| 728 |
-
folder = f"wt_{mode}_{pooled_or_unpooled}" # wt_wt_pooled / wt_smiles_unpooled etc.
|
| 729 |
model_dir = self.training_root / "binding_affinity" / folder
|
| 730 |
art = find_best_artifact(model_dir)
|
| 731 |
-
|
| 732 |
-
|
| 733 |
-
|
| 734 |
-
|
| 735 |
-
|
| 736 |
-
"
|
| 737 |
-
"
|
| 738 |
-
"
|
| 739 |
-
"
|
|
|
|
| 740 |
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 741 |
continue
|
| 742 |
|
| 743 |
-
|
|
|
|
|
|
|
|
|
|
|
|
|
| 744 |
kind, obj, art = load_artifact(model_dir, self.device)
|
| 745 |
|
| 746 |
-
if kind
|
| 747 |
-
self.
|
|
|
|
| 748 |
else:
|
| 749 |
-
|
| 750 |
-
|
| 751 |
-
|
| 752 |
-
|
| 753 |
-
|
| 754 |
-
|
| 755 |
-
|
| 756 |
-
|
| 757 |
-
|
| 758 |
-
|
| 759 |
-
|
| 760 |
-
|
| 761 |
-
|
| 762 |
-
|
| 763 |
-
|
| 764 |
-
|
| 765 |
-
|
| 766 |
-
|
| 767 |
-
|
| 768 |
-
|
| 769 |
-
|
| 770 |
-
|
| 771 |
-
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 772 |
|
| 773 |
-
|
| 774 |
-
|
| 775 |
-
|
| 776 |
-
- pooled np array shape (1,H) for xgb/joblib
|
| 777 |
-
- unpooled torch tensors (X,M) for NN
|
| 778 |
-
"""
|
| 779 |
-
model = self.models[(prop_key, mode)]
|
| 780 |
-
meta = self.meta[(prop_key, mode)]
|
| 781 |
-
kind = meta.get("kind", None)
|
| 782 |
-
model_name = meta.get("model_name", "")
|
| 783 |
|
| 784 |
-
|
| 785 |
-
|
| 786 |
-
|
| 787 |
-
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 788 |
if kind == "torch_ckpt":
|
| 789 |
-
|
| 790 |
-
|
| 791 |
-
|
| 792 |
-
|
| 793 |
-
|
| 794 |
-
|
| 795 |
-
|
| 796 |
-
|
| 797 |
-
|
| 798 |
-
|
| 799 |
-
|
| 800 |
-
|
| 801 |
-
|
| 802 |
-
|
| 803 |
-
|
| 804 |
-
|
| 805 |
-
|
| 806 |
-
""
|
| 807 |
-
|
| 808 |
-
|
| 809 |
-
|
| 810 |
-
|
| 811 |
-
|
| 812 |
-
|
| 813 |
-
|
| 814 |
-
|
| 815 |
-
|
| 816 |
-
|
| 817 |
-
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 818 |
|
| 819 |
if prop_key == "binding_affinity":
|
| 820 |
raise RuntimeError("Use predict_binding_affinity().")
|
| 821 |
|
| 822 |
-
#
|
| 823 |
if kind == "torch_ckpt":
|
| 824 |
-
X, M = self.
|
| 825 |
with torch.no_grad():
|
| 826 |
-
|
| 827 |
-
|
| 828 |
-
|
| 829 |
-
|
| 830 |
-
|
| 831 |
-
and mode == "wt"
|
| 832 |
-
and model_name in {"xgb_wt_log", "transformer_wt_log"}
|
| 833 |
-
):
|
| 834 |
-
y = float(np.expm1(y))
|
| 835 |
if task_type == "classifier":
|
| 836 |
-
|
| 837 |
-
out
|
|
|
|
| 838 |
if thr is not None:
|
| 839 |
-
out["label"] = int(
|
| 840 |
-
out["threshold"] = float(thr)
|
| 841 |
-
return out
|
| 842 |
else:
|
| 843 |
-
|
| 844 |
-
|
| 845 |
-
|
| 846 |
-
|
| 847 |
-
|
| 848 |
-
|
| 849 |
-
|
| 850 |
-
|
| 851 |
-
model_name = meta.get("model_name", "")
|
| 852 |
-
if (
|
| 853 |
-
prop_key == "halflife"
|
| 854 |
-
and mode == "wt"
|
| 855 |
-
and model_name in {"xgb_wt_log", "transformer_wt_log"}
|
| 856 |
-
):
|
| 857 |
pred = float(np.expm1(pred))
|
| 858 |
-
|
| 859 |
-
|
| 860 |
-
|
| 861 |
-
|
| 862 |
-
|
| 863 |
-
# joblib
|
| 864 |
-
|
| 865 |
-
feats = self.
|
| 866 |
-
# classifier vs regressor behavior differs by estimator
|
| 867 |
if task_type == "classifier":
|
| 868 |
if hasattr(model, "predict_proba"):
|
| 869 |
pred = float(model.predict_proba(feats)[:, 1][0])
|
|
|
|
|
|
|
| 870 |
else:
|
| 871 |
-
|
| 872 |
-
|
| 873 |
-
|
| 874 |
-
else:
|
| 875 |
-
pred = float(model.predict(feats)[0])
|
| 876 |
-
out = {"property": prop_key, "mode": mode, "score": pred}
|
| 877 |
if thr is not None:
|
| 878 |
-
out["label"] = int(pred >= float(thr))
|
| 879 |
-
out["threshold"] = float(thr)
|
| 880 |
-
return out
|
| 881 |
else:
|
| 882 |
pred = float(model.predict(feats)[0])
|
| 883 |
-
|
| 884 |
-
|
| 885 |
-
|
|
|
|
| 886 |
|
| 887 |
-
|
| 888 |
-
|
| 889 |
-
|
| 890 |
-
|
| 891 |
-
"""
|
| 892 |
-
prop_key = "binding_affinity"
|
| 893 |
-
if (prop_key, mode) not in self.models:
|
| 894 |
-
raise KeyError(f"No binding model loaded for ({prop_key}, {mode}).")
|
| 895 |
|
| 896 |
-
|
| 897 |
-
pooled_or_unpooled = self.meta[(prop_key, mode)]["model_name"] # pooled/unpooled
|
| 898 |
|
| 899 |
-
|
| 900 |
-
|
| 901 |
-
|
| 902 |
-
|
| 903 |
-
|
| 904 |
-
|
| 905 |
-
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 906 |
with torch.no_grad():
|
| 907 |
reg, logits = model(t_vec, b_vec)
|
| 908 |
-
affinity = float(reg.squeeze().cpu().item())
|
| 909 |
-
cls_logit = int(torch.argmax(logits, dim=-1).cpu().item())
|
| 910 |
-
cls_thr = affinity_to_class(affinity)
|
| 911 |
else:
|
| 912 |
T, Mt = self.wt_embedder.unpooled(target_seq)
|
| 913 |
-
if
|
| 914 |
-
|
| 915 |
-
|
| 916 |
-
B, Mb = self.smiles_embedder.unpooled(binder_str)
|
| 917 |
with torch.no_grad():
|
| 918 |
reg, logits = model(T, Mt, B, Mb)
|
| 919 |
-
|
| 920 |
-
|
| 921 |
-
|
| 922 |
-
|
| 923 |
-
names
|
| 924 |
-
|
| 925 |
-
|
| 926 |
-
"
|
| 927 |
-
"
|
|
|
|
| 928 |
"class_by_threshold": names[cls_thr],
|
| 929 |
-
"class_by_logits":
|
| 930 |
-
"binding_model":
|
| 931 |
}
|
| 932 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 933 |
|
| 934 |
if __name__ == "__main__":
|
| 935 |
-
|
| 936 |
-
manifest_path="best_models.txt",
|
| 937 |
-
classifier_weight_root="./Classifier_Weight"
|
| 938 |
-
)
|
| 939 |
-
print(predictor.predict_property("hemolysis", "wt", "GIGAVLKVLTTGLPALISWIKRKRQQ"))
|
| 940 |
-
print(predictor.predict_binding_affinity("wt", target_seq="...", binder_str="..."))
|
| 941 |
|
| 942 |
-
|
| 943 |
-
|
| 944 |
-
|
| 945 |
-
|
| 946 |
-
wt = WTEmbedder(device)
|
| 947 |
-
sm = SMILESEmbedder(device,
|
| 948 |
-
vocab_path="./tokeizner/new_vocab.txt",
|
| 949 |
-
splits_path="./tokenizer/new_splits.txt"
|
| 950 |
)
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 951 |
|
| 952 |
-
|
| 953 |
-
|
| 954 |
-
|
| 955 |
-
|
| 956 |
-
|
| 957 |
-
|
|
|
|
|
|
|
| 1 |
from __future__ import annotations
|
|
|
|
| 2 |
import csv, re, json
|
| 3 |
from dataclasses import dataclass
|
| 4 |
from pathlib import Path
|
| 5 |
from typing import Dict, Optional, Tuple, Any, List
|
|
|
|
| 6 |
import numpy as np
|
| 7 |
import torch
|
| 8 |
import torch.nn as nn
|
| 9 |
import joblib
|
| 10 |
import xgboost as xgb
|
|
|
|
| 11 |
from transformers import EsmModel, EsmTokenizer, AutoModelForMaskedLM
|
| 12 |
from tokenizer.my_tokenizers import SMILES_SPE_Tokenizer
|
| 13 |
+
from lightning.pytorch import seed_everything
|
| 14 |
+
seed_everything(1986)
|
| 15 |
|
| 16 |
# -----------------------------
|
| 17 |
# Manifest
|
| 18 |
# -----------------------------
|
| 19 |
+
|
| 20 |
+
EMB_TAG_TO_FOLDER_SUFFIX = {
|
| 21 |
+
"wt": "wt",
|
| 22 |
+
"peptideclm": "smiles",
|
| 23 |
+
"chemberta": "chemberta",
|
| 24 |
+
}
|
| 25 |
+
|
| 26 |
+
EMB_TAG_TO_RUNTIME_MODE = {
|
| 27 |
+
"wt": "wt",
|
| 28 |
+
"peptideclm": "smiles",
|
| 29 |
+
"chemberta": "chemberta",
|
| 30 |
+
}
|
| 31 |
+
|
| 32 |
+
MAPIE_REGRESSION_MODELS = {"svr", "enet_gpu"}
|
| 33 |
+
DNN_ARCHS = {"mlp", "cnn", "transformer"}
|
| 34 |
+
XGB_MODELS = {"xgb", "xgb_reg", "xgb_wt_log", "xgb_smiles"}
|
| 35 |
+
|
| 36 |
+
|
| 37 |
@dataclass(frozen=True)
|
| 38 |
class BestRow:
|
| 39 |
property_key: str
|
| 40 |
+
best_wt: Optional[Tuple[str, Optional[str]]]
|
| 41 |
+
best_smiles: Optional[Tuple[str, Optional[str]]]
|
| 42 |
+
task_type: str
|
| 43 |
+
thr_wt: Optional[float]
|
| 44 |
thr_smiles: Optional[float]
|
| 45 |
|
| 46 |
|
|
|
|
| 49 |
|
| 50 |
def _none_if_dash(s: str) -> Optional[str]:
|
| 51 |
s = _clean(s)
|
| 52 |
+
return None if s in {"", "-", "-", "NA", "N/A"} else s
|
|
|
|
|
|
|
| 53 |
|
| 54 |
def _float_or_none(s: str) -> Optional[float]:
|
| 55 |
s = _clean(s)
|
| 56 |
+
return None if s in {"", "-", "-", "NA", "N/A"} else float(s)
|
|
|
|
|
|
|
| 57 |
|
| 58 |
def normalize_property_key(name: str) -> str:
|
| 59 |
n = name.strip().lower()
|
| 60 |
n = re.sub(r"\s*\(.*?\)\s*", "", n)
|
| 61 |
n = n.replace("-", "_").replace(" ", "_")
|
|
|
|
| 62 |
if "permeability" in n and "pampa" not in n and "caco" not in n:
|
| 63 |
return "permeability_penetrance"
|
| 64 |
if n == "binding_affinity":
|
|
|
|
| 70 |
return n
|
| 71 |
|
| 72 |
|
| 73 |
+
MODEL_ALIAS = {
|
| 74 |
+
"SVM": "svm_gpu",
|
| 75 |
+
"SVR": "svr",
|
| 76 |
+
"ENET": "enet_gpu",
|
| 77 |
+
"CNN": "cnn",
|
| 78 |
+
"MLP": "mlp",
|
| 79 |
+
"TRANSFORMER": "transformer",
|
| 80 |
+
"XGB": "xgb",
|
| 81 |
+
"XGB_REG": "xgb_reg",
|
| 82 |
+
"POOLED": "pooled",
|
| 83 |
+
"UNPOOLED": "unpooled",
|
| 84 |
+
"TRANSFORMER_WT_LOG": "transformer_wt_log",
|
| 85 |
+
}
|
| 86 |
+
|
| 87 |
+
def _parse_model_and_emb(raw: Optional[str]) -> Optional[Tuple[str, Optional[str]]]:
|
| 88 |
+
if raw is None:
|
| 89 |
+
return None
|
| 90 |
+
raw = _clean(raw)
|
| 91 |
+
if not raw or raw in {"-", "-", "NA", "N/A"}:
|
| 92 |
+
return None
|
| 93 |
+
|
| 94 |
+
m = re.match(r"^(.+?)\s*\((.+?)\)\s*$", raw)
|
| 95 |
+
if m:
|
| 96 |
+
model_raw = m.group(1).strip()
|
| 97 |
+
emb_tag = m.group(2).strip().lower()
|
| 98 |
+
else:
|
| 99 |
+
model_raw = raw
|
| 100 |
+
emb_tag = None
|
| 101 |
+
|
| 102 |
+
canon = MODEL_ALIAS.get(model_raw.upper(), model_raw.lower())
|
| 103 |
+
return canon, emb_tag
|
| 104 |
+
|
| 105 |
+
|
| 106 |
def read_best_manifest_csv(path: str | Path) -> Dict[str, BestRow]:
|
|
|
|
|
|
|
|
|
|
|
|
|
| 107 |
p = Path(path)
|
| 108 |
out: Dict[str, BestRow] = {}
|
| 109 |
|
|
|
|
| 129 |
continue
|
| 130 |
prop_key = normalize_property_key(prop_raw)
|
| 131 |
|
| 132 |
+
best_wt = _parse_model_and_emb(_none_if_dash(rec.get("Best_Model_WT", "")))
|
| 133 |
+
best_smiles = _parse_model_and_emb(_none_if_dash(rec.get("Best_Model_SMILES", "")))
|
| 134 |
+
|
| 135 |
row = BestRow(
|
| 136 |
property_key=prop_key,
|
| 137 |
+
best_wt=best_wt,
|
| 138 |
+
best_smiles=best_smiles,
|
| 139 |
task_type=_clean(rec.get("Type", "Classifier")),
|
| 140 |
thr_wt=_float_or_none(rec.get("Threshold_WT", "")),
|
| 141 |
thr_smiles=_float_or_none(rec.get("Threshold_SMILES", "")),
|
|
|
|
| 145 |
return out
|
| 146 |
|
| 147 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 148 |
# -----------------------------
|
| 149 |
# Generic artifact loading
|
| 150 |
# -----------------------------
|
| 151 |
def find_best_artifact(model_dir: Path) -> Path:
|
| 152 |
+
for pat in ["best_model.json", "best_model.pt", "best_model*.joblib",
|
| 153 |
+
"model.json", "model.ubj", "final_model.json"]:
|
| 154 |
hits = sorted(model_dir.glob(pat))
|
| 155 |
if hits:
|
| 156 |
return hits[0]
|
| 157 |
+
seed_pt = model_dir / "seed_1986" / "model.pt"
|
| 158 |
+
if seed_pt.exists():
|
| 159 |
+
return seed_pt
|
| 160 |
raise FileNotFoundError(f"No best_model artifact found in {model_dir}")
|
| 161 |
|
| 162 |
def load_artifact(model_dir: Path, device: torch.device) -> Tuple[str, Any, Path]:
|
| 163 |
art = find_best_artifact(model_dir)
|
|
|
|
| 164 |
if art.suffix == ".json":
|
| 165 |
booster = xgb.Booster()
|
|
|
|
| 166 |
booster.load_model(str(art))
|
| 167 |
return "xgb", booster, art
|
|
|
|
| 168 |
if art.suffix == ".joblib":
|
| 169 |
obj = joblib.load(art)
|
| 170 |
return "joblib", obj, art
|
|
|
|
| 171 |
if art.suffix == ".pt":
|
| 172 |
ckpt = torch.load(art, map_location=device, weights_only=False)
|
| 173 |
return "torch_ckpt", ckpt, art
|
|
|
|
| 174 |
raise ValueError(f"Unknown artifact type: {art}")
|
| 175 |
|
| 176 |
|
|
|
|
| 178 |
# NN architectures
|
| 179 |
# -----------------------------
|
| 180 |
class MaskedMeanPool(nn.Module):
|
| 181 |
+
def forward(self, X, M):
|
| 182 |
Mf = M.unsqueeze(-1).float()
|
| 183 |
denom = Mf.sum(dim=1).clamp(min=1.0)
|
| 184 |
return (X * Mf).sum(dim=1) / denom
|
|
|
|
| 188 |
super().__init__()
|
| 189 |
self.pool = MaskedMeanPool()
|
| 190 |
self.net = nn.Sequential(
|
| 191 |
+
nn.Linear(in_dim, hidden), nn.GELU(), nn.Dropout(dropout),
|
|
|
|
|
|
|
| 192 |
nn.Linear(hidden, 1),
|
| 193 |
)
|
| 194 |
def forward(self, X, M):
|
| 195 |
+
return self.net(self.pool(X, M)).squeeze(-1)
|
|
|
|
| 196 |
|
| 197 |
class CNNHead(nn.Module):
|
| 198 |
def __init__(self, in_ch, c=256, k=5, layers=2, dropout=0.1):
|
| 199 |
super().__init__()
|
| 200 |
+
blocks, ch = [], in_ch
|
|
|
|
| 201 |
for _ in range(layers):
|
| 202 |
+
blocks += [nn.Conv1d(ch, c, kernel_size=k, padding=k//2), nn.GELU(), nn.Dropout(dropout)]
|
|
|
|
|
|
|
| 203 |
ch = c
|
| 204 |
self.conv = nn.Sequential(*blocks)
|
| 205 |
self.head = nn.Linear(c, 1)
|
|
|
|
| 206 |
def forward(self, X, M):
|
| 207 |
+
Y = self.conv(X.transpose(1, 2)).transpose(1, 2)
|
|
|
|
| 208 |
Mf = M.unsqueeze(-1).float()
|
| 209 |
+
pooled = (Y * Mf).sum(dim=1) / Mf.sum(dim=1).clamp(min=1.0)
|
|
|
|
| 210 |
return self.head(pooled).squeeze(-1)
|
| 211 |
|
| 212 |
class TransformerHead(nn.Module):
|
|
|
|
| 219 |
)
|
| 220 |
self.enc = nn.TransformerEncoder(enc_layer, num_layers=layers)
|
| 221 |
self.head = nn.Linear(d_model, 1)
|
|
|
|
| 222 |
def forward(self, X, M):
|
| 223 |
+
Z = self.enc(self.proj(X), src_key_padding_mask=~M)
|
|
|
|
|
|
|
| 224 |
Mf = M.unsqueeze(-1).float()
|
| 225 |
+
pooled = (Z * Mf).sum(dim=1) / Mf.sum(dim=1).clamp(min=1.0)
|
|
|
|
| 226 |
return self.head(pooled).squeeze(-1)
|
| 227 |
|
| 228 |
def _infer_in_dim_from_sd(sd: dict, model_name: str) -> int:
|
| 229 |
+
if model_name == "mlp": return int(sd["net.0.weight"].shape[1])
|
| 230 |
+
if model_name == "cnn": return int(sd["conv.0.weight"].shape[1])
|
| 231 |
+
if model_name == "transformer": return int(sd["proj.weight"].shape[1])
|
|
|
|
|
|
|
|
|
|
| 232 |
raise ValueError(model_name)
|
| 233 |
|
| 234 |
+
def _infer_num_layers_from_sd(sd: dict, prefix: str = "enc.layers.") -> int:
|
| 235 |
+
idxs = set()
|
| 236 |
+
for k in sd.keys():
|
| 237 |
+
if k.startswith(prefix):
|
| 238 |
+
m = re.match(r"(\d+)\.", k[len(prefix):])
|
| 239 |
+
if m:
|
| 240 |
+
idxs.add(int(m.group(1)))
|
| 241 |
+
return (max(idxs) + 1) if idxs else 1
|
| 242 |
+
|
| 243 |
+
def _infer_transformer_arch_from_sd(sd: dict) -> Tuple[int, int, int]:
|
| 244 |
+
if "proj.weight" not in sd:
|
| 245 |
+
raise KeyError("Missing proj.weight in state_dict")
|
| 246 |
+
d_model = int(sd["proj.weight"].shape[0])
|
| 247 |
+
layers = _infer_num_layers_from_sd(sd, prefix="enc.layers.")
|
| 248 |
+
ff = int(sd["enc.layers.0.linear1.weight"].shape[0]) if "enc.layers.0.linear1.weight" in sd else 4 * d_model
|
| 249 |
+
return d_model, layers, ff
|
| 250 |
+
|
| 251 |
+
def _pick_nhead(d_model: int) -> int:
|
| 252 |
+
for h in (8, 6, 4, 3, 2, 1):
|
| 253 |
+
if d_model % h == 0:
|
| 254 |
+
return h
|
| 255 |
+
return 1
|
| 256 |
+
|
| 257 |
def build_torch_model_from_ckpt(model_name: str, ckpt: dict, device: torch.device) -> nn.Module:
|
| 258 |
params = ckpt["best_params"]
|
| 259 |
+
sd = ckpt["state_dict"]
|
| 260 |
in_dim = int(ckpt.get("in_dim", _infer_in_dim_from_sd(sd, model_name)))
|
| 261 |
dropout = float(params.get("dropout", 0.1))
|
| 262 |
|
|
|
|
| 266 |
model = CNNHead(in_ch=in_dim, c=int(params["channels"]), k=int(params["kernel"]),
|
| 267 |
layers=int(params["layers"]), dropout=dropout)
|
| 268 |
elif model_name == "transformer":
|
| 269 |
+
d_model = params.get("d_model") or params.get("hidden") or params.get("hidden_dim")
|
|
|
|
|
|
|
|
|
|
|
|
|
| 270 |
if d_model is None:
|
| 271 |
+
d_model_i, layers_i, ff_i = _infer_transformer_arch_from_sd(sd)
|
| 272 |
+
nhead_i = _pick_nhead(d_model_i)
|
| 273 |
+
model = TransformerHead(
|
| 274 |
+
in_dim=in_dim, d_model=int(d_model_i), nhead=int(params.get("nhead", nhead_i)),
|
| 275 |
+
layers=int(params.get("layers", layers_i)), ff=int(params.get("ff", ff_i)),
|
| 276 |
+
dropout=float(params.get("dropout", dropout)),
|
| 277 |
+
)
|
| 278 |
+
else:
|
| 279 |
+
d_model = int(d_model)
|
| 280 |
+
model = TransformerHead(
|
| 281 |
+
in_dim=in_dim, d_model=d_model,
|
| 282 |
+
nhead=int(params.get("nhead", _pick_nhead(d_model))),
|
| 283 |
+
layers=int(params.get("layers", 2)),
|
| 284 |
+
ff=int(params.get("ff", 4 * d_model)),
|
| 285 |
+
dropout=dropout,
|
| 286 |
)
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 287 |
else:
|
| 288 |
raise ValueError(f"Unknown NN model_name={model_name}")
|
| 289 |
|
| 290 |
model.load_state_dict(sd)
|
| 291 |
+
model.to(device).eval()
|
|
|
|
| 292 |
return model
|
| 293 |
|
| 294 |
|
| 295 |
# -----------------------------
|
| 296 |
+
# Wrappers
|
| 297 |
+
# -----------------------------
|
| 298 |
+
from sklearn.base import BaseEstimator, ClassifierMixin, RegressorMixin
|
| 299 |
+
|
| 300 |
+
class PassthroughRegressor(BaseEstimator, RegressorMixin):
|
| 301 |
+
def __init__(self, preds: np.ndarray):
|
| 302 |
+
self.preds = preds
|
| 303 |
+
def fit(self, X, y): return self
|
| 304 |
+
def predict(self, X): return self.preds[:len(X)]
|
| 305 |
+
|
| 306 |
+
class PassthroughClassifier(BaseEstimator, ClassifierMixin):
|
| 307 |
+
def __init__(self, preds: np.ndarray):
|
| 308 |
+
self.preds = preds
|
| 309 |
+
self.classes_ = np.array([0, 1])
|
| 310 |
+
def fit(self, X, y): return self
|
| 311 |
+
def predict(self, X): return (self.preds[:len(X)] >= 0.5).astype(int)
|
| 312 |
+
def predict_proba(self, X):
|
| 313 |
+
p = self.preds[:len(X)]
|
| 314 |
+
return np.stack([1 - p, p], axis=1)
|
| 315 |
+
|
| 316 |
+
|
| 317 |
+
# -----------------------------
|
| 318 |
+
# Uncertainty helpers
|
| 319 |
# -----------------------------
|
| 320 |
+
SEED_DIRS = ["seed_1986", "seed_42", "seed_0", "seed_123", "seed_12345"]
|
| 321 |
+
|
| 322 |
+
def load_seed_ensemble(model_dir: Path, arch: str, device: torch.device) -> List[nn.Module]:
|
| 323 |
+
ensemble = []
|
| 324 |
+
for sd_name in SEED_DIRS:
|
| 325 |
+
pt = model_dir / sd_name / "model.pt"
|
| 326 |
+
if not pt.exists():
|
| 327 |
+
continue
|
| 328 |
+
ckpt = torch.load(pt, map_location=device, weights_only=False)
|
| 329 |
+
ensemble.append(build_torch_model_from_ckpt(arch, ckpt, device))
|
| 330 |
+
return ensemble
|
| 331 |
+
|
| 332 |
+
def _binary_entropy(p: float) -> float:
|
| 333 |
+
p = float(np.clip(p, 1e-9, 1 - 1e-9))
|
| 334 |
+
return float(-p * np.log(p) - (1 - p) * np.log(1 - p))
|
| 335 |
+
|
| 336 |
+
def _ensemble_clf_uncertainty(ensemble: List[nn.Module], X: torch.Tensor, M: torch.Tensor) -> float:
|
| 337 |
+
probs = []
|
| 338 |
+
with torch.no_grad():
|
| 339 |
+
for m in ensemble:
|
| 340 |
+
logit = m(X, M).squeeze().float().cpu().item()
|
| 341 |
+
probs.append(1.0 / (1.0 + np.exp(-logit)))
|
| 342 |
+
return _binary_entropy(float(np.mean(probs)))
|
| 343 |
+
|
| 344 |
+
def _ensemble_reg_uncertainty(ensemble: List[nn.Module], X: torch.Tensor, M: torch.Tensor) -> float:
|
| 345 |
+
preds = []
|
| 346 |
+
with torch.no_grad():
|
| 347 |
+
for m in ensemble:
|
| 348 |
+
preds.append(m(X, M).squeeze().float().cpu().item())
|
| 349 |
+
return float(np.std(preds))
|
| 350 |
+
|
| 351 |
+
def _mapie_uncertainty(mapie_bundle: dict, score: float,
|
| 352 |
+
embedding: Optional[np.ndarray] = None) -> Tuple[float, float]:
|
| 353 |
+
"""
|
| 354 |
+
Returns (ci_low, ci_high) from a conformal bundle.
|
| 355 |
+
- adaptive: {"quantile": q, "sigma_model": xgb, "emb_tag": ..., "adaptive": True}
|
| 356 |
+
Input-dependent: interval = score +/- q * sigma(embedding)
|
| 357 |
+
- plain_quantile: {"quantile": q, "alpha": ...}
|
| 358 |
+
Fixed-width: interval = score +/- q
|
| 359 |
+
"""
|
| 360 |
+
# Adaptive format is input-dependent interval
|
| 361 |
+
if mapie_bundle.get("adaptive") and "sigma_model" in mapie_bundle:
|
| 362 |
+
q = float(mapie_bundle["quantile"])
|
| 363 |
+
if embedding is not None:
|
| 364 |
+
# Adaptive interval: y_hat ± q * sigma_hat(x).
|
| 365 |
+
# Equivalent to MAPIE's get_estimation_distribution():
|
| 366 |
+
# y_pred + conformity_scores * r_pred
|
| 367 |
+
# where conformity_scores=q and r_pred=sigma_hat(x).
|
| 368 |
+
# (ResidualNormalisedScore, Cordier et al. 2023)
|
| 369 |
+
sigma_model = mapie_bundle["sigma_model"]
|
| 370 |
+
sigma = float(sigma_model.predict(xgb.DMatrix(embedding.reshape(1, -1)))[0])
|
| 371 |
+
sigma = max(sigma, 1e-6)
|
| 372 |
+
else:
|
| 373 |
+
# No embedding available - fall back to fixed interval with sigma=1
|
| 374 |
+
sigma = 1.0
|
| 375 |
+
return float(score - q * sigma), float(score + q * sigma)
|
| 376 |
+
|
| 377 |
+
# Plain quantile format
|
| 378 |
+
if "quantile" in mapie_bundle:
|
| 379 |
+
q = float(mapie_bundle["quantile"])
|
| 380 |
+
return float(score - q), float(score + q)
|
| 381 |
+
|
| 382 |
+
X_dummy = np.zeros((1, 1))
|
| 383 |
+
result = mapie.predict(X_dummy)
|
| 384 |
+
if isinstance(result, tuple):
|
| 385 |
+
intervals = np.asarray(result[1])
|
| 386 |
+
if intervals.ndim == 3:
|
| 387 |
+
return float(intervals[0, 0, 0]), float(intervals[0, 1, 0])
|
| 388 |
+
return float(intervals[0, 0]), float(intervals[0, 1])
|
| 389 |
+
raise RuntimeError(
|
| 390 |
+
f"Cannot extract intervals: unknown MAPIE bundle format. "
|
| 391 |
+
f"Bundle keys: {list(mapie_bundle.keys())}."
|
| 392 |
+
)
|
| 393 |
+
|
| 394 |
def affinity_to_class(y: float) -> int:
|
|
|
|
| 395 |
if y >= 9.0: return 0
|
| 396 |
if y < 7.0: return 2
|
| 397 |
return 1
|
|
|
|
| 401 |
super().__init__()
|
| 402 |
self.t_proj = nn.Sequential(nn.Linear(Ht, hidden), nn.LayerNorm(hidden))
|
| 403 |
self.b_proj = nn.Sequential(nn.Linear(Hb, hidden), nn.LayerNorm(hidden))
|
|
|
|
| 404 |
self.layers = nn.ModuleList([])
|
| 405 |
for _ in range(n_layers):
|
| 406 |
self.layers.append(nn.ModuleDict({
|
| 407 |
"attn_tb": nn.MultiheadAttention(hidden, n_heads, dropout=dropout, batch_first=False),
|
| 408 |
"attn_bt": nn.MultiheadAttention(hidden, n_heads, dropout=dropout, batch_first=False),
|
| 409 |
+
"n1t": nn.LayerNorm(hidden), "n2t": nn.LayerNorm(hidden),
|
| 410 |
+
"n1b": nn.LayerNorm(hidden), "n2b": nn.LayerNorm(hidden),
|
|
|
|
|
|
|
| 411 |
"fft": nn.Sequential(nn.Linear(hidden, 4*hidden), nn.GELU(), nn.Dropout(dropout), nn.Linear(4*hidden, hidden)),
|
| 412 |
"ffb": nn.Sequential(nn.Linear(hidden, 4*hidden), nn.GELU(), nn.Dropout(dropout), nn.Linear(4*hidden, hidden)),
|
| 413 |
}))
|
|
|
|
| 414 |
self.shared = nn.Sequential(nn.Linear(2*hidden, hidden), nn.GELU(), nn.Dropout(dropout))
|
| 415 |
self.reg = nn.Linear(hidden, 1)
|
| 416 |
self.cls = nn.Linear(hidden, 3)
|
| 417 |
|
| 418 |
def forward(self, t_vec, b_vec):
|
| 419 |
+
t = self.t_proj(t_vec).unsqueeze(0)
|
| 420 |
+
b = self.b_proj(b_vec).unsqueeze(0)
|
| 421 |
for L in self.layers:
|
| 422 |
t_attn, _ = L["attn_tb"](t, b, b)
|
| 423 |
t = L["n1t"]((t + t_attn).transpose(0,1)).transpose(0,1)
|
| 424 |
t = L["n2t"]((t + L["fft"](t)).transpose(0,1)).transpose(0,1)
|
|
|
|
| 425 |
b_attn, _ = L["attn_bt"](b, t, t)
|
| 426 |
b = L["n1b"]((b + b_attn).transpose(0,1)).transpose(0,1)
|
| 427 |
b = L["n2b"]((b + L["ffb"](b)).transpose(0,1)).transpose(0,1)
|
| 428 |
+
h = self.shared(torch.cat([t[0], b[0]], dim=-1))
|
|
|
|
|
|
|
| 429 |
return self.reg(h).squeeze(-1), self.cls(h)
|
| 430 |
|
| 431 |
class CrossAttnUnpooled(nn.Module):
|
|
|
|
| 433 |
super().__init__()
|
| 434 |
self.t_proj = nn.Sequential(nn.Linear(Ht, hidden), nn.LayerNorm(hidden))
|
| 435 |
self.b_proj = nn.Sequential(nn.Linear(Hb, hidden), nn.LayerNorm(hidden))
|
|
|
|
| 436 |
self.layers = nn.ModuleList([])
|
| 437 |
for _ in range(n_layers):
|
| 438 |
self.layers.append(nn.ModuleDict({
|
| 439 |
"attn_tb": nn.MultiheadAttention(hidden, n_heads, dropout=dropout, batch_first=True),
|
| 440 |
"attn_bt": nn.MultiheadAttention(hidden, n_heads, dropout=dropout, batch_first=True),
|
| 441 |
+
"n1t": nn.LayerNorm(hidden), "n2t": nn.LayerNorm(hidden),
|
| 442 |
+
"n1b": nn.LayerNorm(hidden), "n2b": nn.LayerNorm(hidden),
|
|
|
|
|
|
|
| 443 |
"fft": nn.Sequential(nn.Linear(hidden, 4*hidden), nn.GELU(), nn.Dropout(dropout), nn.Linear(4*hidden, hidden)),
|
| 444 |
"ffb": nn.Sequential(nn.Linear(hidden, 4*hidden), nn.GELU(), nn.Dropout(dropout), nn.Linear(4*hidden, hidden)),
|
| 445 |
}))
|
|
|
|
| 446 |
self.shared = nn.Sequential(nn.Linear(2*hidden, hidden), nn.GELU(), nn.Dropout(dropout))
|
| 447 |
self.reg = nn.Linear(hidden, 1)
|
| 448 |
self.cls = nn.Linear(hidden, 3)
|
| 449 |
|
| 450 |
def _masked_mean(self, X, M):
|
| 451 |
Mf = M.unsqueeze(-1).float()
|
| 452 |
+
return (X * Mf).sum(dim=1) / Mf.sum(dim=1).clamp(min=1.0)
|
|
|
|
| 453 |
|
| 454 |
def forward(self, T, Mt, B, Mb):
|
| 455 |
+
T = self.t_proj(T); Bx = self.b_proj(B)
|
| 456 |
+
kp_t, kp_b = ~Mt, ~Mb
|
|
|
|
|
|
|
|
|
|
| 457 |
for L in self.layers:
|
| 458 |
T_attn, _ = L["attn_tb"](T, Bx, Bx, key_padding_mask=kp_b)
|
| 459 |
+
T = L["n1t"](T + T_attn); T = L["n2t"](T + L["fft"](T))
|
|
|
|
|
|
|
| 460 |
B_attn, _ = L["attn_bt"](Bx, T, T, key_padding_mask=kp_t)
|
| 461 |
+
Bx = L["n1b"](Bx + B_attn); Bx = L["n2b"](Bx + L["ffb"](Bx))
|
| 462 |
+
h = self.shared(torch.cat([self._masked_mean(T, Mt), self._masked_mean(Bx, Mb)], dim=-1))
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 463 |
return self.reg(h).squeeze(-1), self.cls(h)
|
| 464 |
|
| 465 |
def load_binding_model(best_model_pt: Path, pooled_or_unpooled: str, device: torch.device) -> nn.Module:
|
| 466 |
ckpt = torch.load(best_model_pt, map_location=device, weights_only=False)
|
| 467 |
params = ckpt["best_params"]
|
| 468 |
+
sd = ckpt["state_dict"]
|
|
|
|
|
|
|
| 469 |
Ht = int(sd["t_proj.0.weight"].shape[1])
|
| 470 |
Hb = int(sd["b_proj.0.weight"].shape[1])
|
| 471 |
+
common = dict(Ht=Ht, Hb=Hb, hidden=int(params["hidden_dim"]),
|
| 472 |
+
n_heads=int(params["n_heads"]), n_layers=int(params["n_layers"]),
|
| 473 |
+
dropout=float(params["dropout"]))
|
| 474 |
+
cls = CrossAttnPooled if pooled_or_unpooled == "pooled" else CrossAttnUnpooled
|
| 475 |
+
model = cls(**common)
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 476 |
model.load_state_dict(sd)
|
| 477 |
+
return model.to(device).eval()
|
|
|
|
| 478 |
|
| 479 |
|
| 480 |
# -----------------------------
|
| 481 |
# Embedding generation
|
| 482 |
# -----------------------------
|
| 483 |
def _safe_isin(ids: torch.Tensor, test_ids: torch.Tensor) -> torch.Tensor:
|
|
|
|
|
|
|
|
|
|
| 484 |
if hasattr(torch, "isin"):
|
| 485 |
return torch.isin(ids, test_ids)
|
|
|
|
|
|
|
| 486 |
return (ids.unsqueeze(-1) == test_ids.view(1, 1, -1)).any(dim=-1)
|
| 487 |
+
|
| 488 |
class SMILESEmbedder:
|
| 489 |
+
def __init__(self, device, vocab_path, splits_path,
|
| 490 |
+
clm_name="aaronfeller/PeptideCLM-23M-all", max_len=512, use_cache=True):
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 491 |
self.device = device
|
| 492 |
self.max_len = max_len
|
| 493 |
self.use_cache = use_cache
|
|
|
|
| 494 |
self.tokenizer = SMILES_SPE_Tokenizer(vocab_path, splits_path)
|
| 495 |
self.model = AutoModelForMaskedLM.from_pretrained(clm_name).roformer.to(device).eval()
|
|
|
|
| 496 |
self.special_ids = self._get_special_ids(self.tokenizer)
|
| 497 |
self.special_ids_t = (torch.tensor(self.special_ids, device=device, dtype=torch.long)
|
| 498 |
+
if self.special_ids else None)
|
|
|
|
| 499 |
self._cache_pooled: Dict[str, torch.Tensor] = {}
|
| 500 |
self._cache_unpooled: Dict[str, Tuple[torch.Tensor, torch.Tensor]] = {}
|
| 501 |
|
| 502 |
@staticmethod
|
| 503 |
def _get_special_ids(tokenizer) -> List[int]:
|
| 504 |
+
cand = [getattr(tokenizer, f"{x}_token_id", None)
|
| 505 |
+
for x in ("pad", "cls", "sep", "bos", "eos", "mask")]
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 506 |
return sorted({int(x) for x in cand if x is not None})
|
| 507 |
|
| 508 |
+
def _tokenize(self, smiles_list):
|
| 509 |
+
tok = self.tokenizer(smiles_list, return_tensors="pt", padding=True,
|
| 510 |
+
truncation=True, max_length=self.max_len)
|
| 511 |
+
for k in tok: tok[k] = tok[k].to(self.device)
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 512 |
if "attention_mask" not in tok:
|
| 513 |
tok["attention_mask"] = torch.ones_like(tok["input_ids"], dtype=torch.long, device=self.device)
|
| 514 |
return tok
|
| 515 |
|
| 516 |
+
def _valid_mask(self, ids, attn):
|
| 517 |
+
valid = attn.bool()
|
| 518 |
+
if self.special_ids_t is not None and self.special_ids_t.numel() > 0:
|
| 519 |
+
valid = valid & (~_safe_isin(ids, self.special_ids_t))
|
| 520 |
+
return valid
|
| 521 |
+
|
| 522 |
@torch.no_grad()
|
| 523 |
def pooled(self, smiles: str) -> torch.Tensor:
|
| 524 |
s = smiles.strip()
|
| 525 |
+
if self.use_cache and s in self._cache_pooled: return self._cache_pooled[s]
|
| 526 |
+
tok = self._tokenize([s])
|
| 527 |
+
h = self.model(input_ids=tok["input_ids"], attention_mask=tok["attention_mask"]).last_hidden_state
|
| 528 |
+
valid = self._valid_mask(tok["input_ids"], tok["attention_mask"])
|
| 529 |
+
vf = valid.unsqueeze(-1).float()
|
| 530 |
+
pooled = (h * vf).sum(dim=1) / vf.sum(dim=1).clamp(min=1e-9)
|
| 531 |
+
if self.use_cache: self._cache_pooled[s] = pooled
|
| 532 |
+
return pooled
|
| 533 |
|
| 534 |
+
@torch.no_grad()
|
| 535 |
+
def unpooled(self, smiles: str) -> Tuple[torch.Tensor, torch.Tensor]:
|
| 536 |
+
s = smiles.strip()
|
| 537 |
+
if self.use_cache and s in self._cache_unpooled: return self._cache_unpooled[s]
|
| 538 |
tok = self._tokenize([s])
|
| 539 |
+
h = self.model(input_ids=tok["input_ids"], attention_mask=tok["attention_mask"]).last_hidden_state
|
| 540 |
+
valid = self._valid_mask(tok["input_ids"], tok["attention_mask"])
|
| 541 |
+
X = h[:, valid[0], :]
|
| 542 |
+
M = torch.ones((1, X.shape[1]), dtype=torch.bool, device=self.device)
|
| 543 |
+
if self.use_cache: self._cache_unpooled[s] = (X, M)
|
| 544 |
+
return X, M
|
| 545 |
|
|
|
|
|
|
|
| 546 |
|
| 547 |
+
class ChemBERTaEmbedder:
|
| 548 |
+
def __init__(self, device, model_name="DeepChem/ChemBERTa-77M-MLM",
|
| 549 |
+
max_len=512, use_cache=True):
|
| 550 |
+
from transformers import AutoTokenizer, AutoModel
|
| 551 |
+
self.device = device
|
| 552 |
+
self.max_len = max_len
|
| 553 |
+
self.use_cache = use_cache
|
| 554 |
+
self.tokenizer = AutoTokenizer.from_pretrained(model_name)
|
| 555 |
+
self.model = AutoModel.from_pretrained(model_name).to(device).eval()
|
| 556 |
+
self.special_ids = self._get_special_ids(self.tokenizer)
|
| 557 |
+
self.special_ids_t = (torch.tensor(self.special_ids, device=device, dtype=torch.long)
|
| 558 |
+
if self.special_ids else None)
|
| 559 |
+
self._cache_pooled: Dict[str, torch.Tensor] = {}
|
| 560 |
+
self._cache_unpooled: Dict[str, Tuple[torch.Tensor, torch.Tensor]] = {}
|
| 561 |
+
|
| 562 |
+
@staticmethod
|
| 563 |
+
def _get_special_ids(tokenizer) -> List[int]:
|
| 564 |
+
cand = [getattr(tokenizer, f"{x}_token_id", None)
|
| 565 |
+
for x in ("pad", "cls", "sep", "bos", "eos", "mask")]
|
| 566 |
+
return sorted({int(x) for x in cand if x is not None})
|
| 567 |
+
|
| 568 |
+
def _tokenize(self, smiles_list):
|
| 569 |
+
tok = self.tokenizer(smiles_list, return_tensors="pt", padding=True,
|
| 570 |
+
truncation=True, max_length=self.max_len)
|
| 571 |
+
for k in tok: tok[k] = tok[k].to(self.device)
|
| 572 |
+
if "attention_mask" not in tok:
|
| 573 |
+
tok["attention_mask"] = torch.ones_like(tok["input_ids"], dtype=torch.long, device=self.device)
|
| 574 |
+
return tok
|
| 575 |
+
|
| 576 |
+
def _valid_mask(self, ids, attn):
|
| 577 |
+
valid = attn.bool()
|
| 578 |
if self.special_ids_t is not None and self.special_ids_t.numel() > 0:
|
| 579 |
valid = valid & (~_safe_isin(ids, self.special_ids_t))
|
| 580 |
+
return valid
|
| 581 |
|
| 582 |
+
@torch.no_grad()
|
| 583 |
+
def pooled(self, smiles: str) -> torch.Tensor:
|
| 584 |
+
s = smiles.strip()
|
| 585 |
+
if self.use_cache and s in self._cache_pooled: return self._cache_pooled[s]
|
| 586 |
+
tok = self._tokenize([s])
|
| 587 |
+
h = self.model(input_ids=tok["input_ids"], attention_mask=tok["attention_mask"]).last_hidden_state
|
| 588 |
+
valid = self._valid_mask(tok["input_ids"], tok["attention_mask"])
|
| 589 |
vf = valid.unsqueeze(-1).float()
|
| 590 |
+
pooled = (h * vf).sum(dim=1) / vf.sum(dim=1).clamp(min=1e-9)
|
| 591 |
+
if self.use_cache: self._cache_pooled[s] = pooled
|
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|
|
|
|
| 592 |
return pooled
|
| 593 |
|
| 594 |
@torch.no_grad()
|
| 595 |
def unpooled(self, smiles: str) -> Tuple[torch.Tensor, torch.Tensor]:
|
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|
| 596 |
s = smiles.strip()
|
| 597 |
+
if self.use_cache and s in self._cache_unpooled: return self._cache_unpooled[s]
|
|
|
|
|
|
|
| 598 |
tok = self._tokenize([s])
|
| 599 |
+
h = self.model(input_ids=tok["input_ids"], attention_mask=tok["attention_mask"]).last_hidden_state
|
| 600 |
+
valid = self._valid_mask(tok["input_ids"], tok["attention_mask"])
|
| 601 |
+
X = h[:, valid[0], :]
|
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|
| 602 |
M = torch.ones((1, X.shape[1]), dtype=torch.bool, device=self.device)
|
| 603 |
+
if self.use_cache: self._cache_unpooled[s] = (X, M)
|
|
|
|
|
|
|
| 604 |
return X, M
|
| 605 |
|
| 606 |
|
| 607 |
class WTEmbedder:
|
| 608 |
+
def __init__(self, device, esm_name="facebook/esm2_t33_650M_UR50D", max_len=1022, use_cache=True):
|
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|
| 609 |
self.device = device
|
| 610 |
self.max_len = max_len
|
| 611 |
self.use_cache = use_cache
|
|
|
|
| 612 |
self.tokenizer = EsmTokenizer.from_pretrained(esm_name)
|
| 613 |
self.model = EsmModel.from_pretrained(esm_name, add_pooling_layer=False).to(device).eval()
|
|
|
|
| 614 |
self.special_ids = self._get_special_ids(self.tokenizer)
|
| 615 |
self.special_ids_t = (torch.tensor(self.special_ids, device=device, dtype=torch.long)
|
| 616 |
+
if self.special_ids else None)
|
|
|
|
| 617 |
self._cache_pooled: Dict[str, torch.Tensor] = {}
|
| 618 |
self._cache_unpooled: Dict[str, Tuple[torch.Tensor, torch.Tensor]] = {}
|
| 619 |
|
| 620 |
@staticmethod
|
| 621 |
def _get_special_ids(tokenizer) -> List[int]:
|
| 622 |
+
cand = [getattr(tokenizer, f"{x}_token_id", None)
|
| 623 |
+
for x in ("pad", "cls", "sep", "bos", "eos", "mask")]
|
|
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|
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|
|
| 624 |
return sorted({int(x) for x in cand if x is not None})
|
| 625 |
|
| 626 |
+
def _tokenize(self, seq_list):
|
| 627 |
+
tok = self.tokenizer(seq_list, return_tensors="pt", padding=True,
|
| 628 |
+
truncation=True, max_length=self.max_len)
|
|
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|
|
|
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|
|
|
|
|
|
| 629 |
tok = {k: v.to(self.device) for k, v in tok.items()}
|
| 630 |
if "attention_mask" not in tok:
|
| 631 |
tok["attention_mask"] = torch.ones_like(tok["input_ids"], dtype=torch.long, device=self.device)
|
| 632 |
return tok
|
| 633 |
|
| 634 |
+
def _valid_mask(self, ids, attn):
|
| 635 |
+
valid = attn.bool()
|
| 636 |
+
if self.special_ids_t is not None and self.special_ids_t.numel() > 0:
|
| 637 |
+
valid = valid & (~_safe_isin(ids, self.special_ids_t))
|
| 638 |
+
return valid
|
| 639 |
+
|
| 640 |
@torch.no_grad()
|
| 641 |
def pooled(self, seq: str) -> torch.Tensor:
|
| 642 |
s = seq.strip()
|
| 643 |
+
if self.use_cache and s in self._cache_pooled: return self._cache_pooled[s]
|
|
|
|
|
|
|
| 644 |
tok = self._tokenize([s])
|
| 645 |
+
h = self.model(**tok).last_hidden_state
|
| 646 |
+
valid = self._valid_mask(tok["input_ids"], tok["attention_mask"])
|
|
|
|
|
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|
|
|
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|
|
|
|
|
|
|
|
|
|
|
|
| 647 |
vf = valid.unsqueeze(-1).float()
|
| 648 |
+
pooled = (h * vf).sum(dim=1) / vf.sum(dim=1).clamp(min=1e-9)
|
| 649 |
+
if self.use_cache: self._cache_pooled[s] = pooled
|
|
|
|
|
|
|
|
|
|
|
|
|
| 650 |
return pooled
|
| 651 |
|
| 652 |
@torch.no_grad()
|
| 653 |
def unpooled(self, seq: str) -> Tuple[torch.Tensor, torch.Tensor]:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 654 |
s = seq.strip()
|
| 655 |
+
if self.use_cache and s in self._cache_unpooled: return self._cache_unpooled[s]
|
|
|
|
|
|
|
| 656 |
tok = self._tokenize([s])
|
| 657 |
+
h = self.model(**tok).last_hidden_state
|
| 658 |
+
valid = self._valid_mask(tok["input_ids"], tok["attention_mask"])
|
| 659 |
+
X = h[:, valid[0], :]
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 660 |
M = torch.ones((1, X.shape[1]), dtype=torch.bool, device=self.device)
|
| 661 |
+
if self.use_cache: self._cache_unpooled[s] = (X, M)
|
|
|
|
|
|
|
| 662 |
return X, M
|
| 663 |
|
|
|
|
|
|
|
|
|
|
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|
|
|
|
|
|
|
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|
|
|
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|
|
|
|
|
|
|
| 664 |
|
| 665 |
# -----------------------------
|
| 666 |
# Predictor
|
| 667 |
# -----------------------------
|
| 668 |
+
|
| 669 |
class PeptiVersePredictor:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 670 |
def __init__(
|
| 671 |
self,
|
| 672 |
manifest_path: str | Path,
|
| 673 |
classifier_weight_root: str | Path,
|
| 674 |
esm_name="facebook/esm2_t33_650M_UR50D",
|
| 675 |
clm_name="aaronfeller/PeptideCLM-23M-all",
|
| 676 |
+
chemberta_name="DeepChem/ChemBERTa-77M-MLM",
|
| 677 |
smiles_vocab="tokenizer/new_vocab.txt",
|
| 678 |
smiles_splits="tokenizer/new_splits.txt",
|
| 679 |
device: Optional[str] = None,
|
|
|
|
| 684 |
|
| 685 |
self.manifest = read_best_manifest_csv(manifest_path)
|
| 686 |
|
| 687 |
+
self.wt_embedder = WTEmbedder(self.device, esm_name=esm_name)
|
| 688 |
+
self.smiles_embedder = SMILESEmbedder(self.device, clm_name=clm_name,
|
| 689 |
+
vocab_path=str(self.root / smiles_vocab),
|
| 690 |
+
splits_path=str(self.root / smiles_splits))
|
| 691 |
+
self.chemberta_embedder = ChemBERTaEmbedder(self.device, model_name=chemberta_name)
|
| 692 |
|
| 693 |
+
self.models: Dict[Tuple[str, str], Any] = {}
|
| 694 |
+
self.meta: Dict[Tuple[str, str], Dict[str, Any]] = {}
|
| 695 |
+
self.mapie: Dict[Tuple[str, str], dict] = {}
|
| 696 |
+
self.ensembles: Dict[Tuple[str, str], List] = {}
|
| 697 |
|
| 698 |
self._load_all_best_models()
|
| 699 |
|
| 700 |
+
def _get_embedder(self, emb_tag: str):
|
| 701 |
+
if emb_tag == "wt": return self.wt_embedder
|
| 702 |
+
if emb_tag == "peptideclm": return self.smiles_embedder
|
| 703 |
+
if emb_tag == "chemberta": return self.chemberta_embedder
|
| 704 |
+
raise ValueError(f"Unknown emb_tag={emb_tag!r}")
|
| 705 |
+
|
| 706 |
+
def _embed_pooled(self, emb_tag: str, input_str: str) -> np.ndarray:
|
| 707 |
+
v = self._get_embedder(emb_tag).pooled(input_str)
|
| 708 |
+
feats = v.detach().cpu().numpy().astype(np.float32)
|
| 709 |
+
feats = np.nan_to_num(feats, nan=0.0)
|
| 710 |
+
return np.clip(feats, np.finfo(np.float32).min, np.finfo(np.float32).max)
|
| 711 |
+
|
| 712 |
+
def _embed_unpooled(self, emb_tag: str, input_str: str) -> Tuple[torch.Tensor, torch.Tensor]:
|
| 713 |
+
return self._get_embedder(emb_tag).unpooled(input_str)
|
| 714 |
+
|
| 715 |
+
def _resolve_dir(self, prop_key: str, model_name: str, emb_tag: str) -> Path:
|
| 716 |
disk_prop = "half_life" if prop_key == "halflife" else prop_key
|
| 717 |
base = self.training_root / disk_prop
|
| 718 |
|
| 719 |
+
folder_suffix = EMB_TAG_TO_FOLDER_SUFFIX.get(emb_tag, emb_tag)
|
|
|
|
|
|
|
|
|
|
|
|
|
| 720 |
|
| 721 |
+
if prop_key == "halflife" and emb_tag == "wt":
|
| 722 |
+
if model_name == "transformer":
|
| 723 |
+
for d in [base / "transformer_wt_log", base / "transformer_wt"]:
|
| 724 |
+
if d.exists(): return d
|
| 725 |
+
if model_name in {"xgb", "xgb_reg"}:
|
| 726 |
+
d = base / "xgb_wt_log"
|
| 727 |
+
if d.exists(): return d
|
| 728 |
|
| 729 |
candidates = [
|
| 730 |
+
base / f"{model_name}_{folder_suffix}",
|
| 731 |
base / model_name,
|
| 732 |
]
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 733 |
for d in candidates:
|
| 734 |
+
if d.exists(): return d
|
|
|
|
| 735 |
|
| 736 |
raise FileNotFoundError(
|
| 737 |
+
f"Cannot find model dir for {prop_key}/{model_name}/{emb_tag}. Tried: {candidates}"
|
| 738 |
)
|
| 739 |
|
|
|
|
| 740 |
def _load_all_best_models(self):
|
| 741 |
for prop_key, row in self.manifest.items():
|
| 742 |
+
for col, parsed, thr in [
|
| 743 |
+
("wt", row.best_wt, row.thr_wt),
|
| 744 |
+
("smiles", row.best_smiles, row.thr_smiles),
|
| 745 |
]:
|
| 746 |
+
if parsed is None:
|
|
|
|
| 747 |
continue
|
| 748 |
+
model_name, emb_tag = parsed
|
| 749 |
|
| 750 |
+
# binding affinity
|
| 751 |
if prop_key == "binding_affinity":
|
| 752 |
+
folder = model_name
|
| 753 |
+
pooled_or_unpooled = "unpooled" if "unpooled" in folder else "pooled"
|
|
|
|
| 754 |
model_dir = self.training_root / "binding_affinity" / folder
|
| 755 |
art = find_best_artifact(model_dir)
|
| 756 |
+
model = load_binding_model(art, pooled_or_unpooled, self.device)
|
| 757 |
+
self.models[(prop_key, col)] = model
|
| 758 |
+
self.meta[(prop_key, col)] = {
|
| 759 |
+
"task_type": "Regression",
|
| 760 |
+
"threshold": None,
|
| 761 |
+
"artifact": str(art),
|
| 762 |
+
"model_name": pooled_or_unpooled,
|
| 763 |
+
"emb_tag": emb_tag,
|
| 764 |
+
"folder": folder,
|
| 765 |
+
"kind": "binding",
|
| 766 |
}
|
| 767 |
+
print(f" [LOAD] binding_affinity ({col}): folder={folder}, arch={pooled_or_unpooled}, emb_tag={emb_tag}, art={art.name}")
|
| 768 |
+
mapie_path = model_dir / "mapie_calibration.joblib"
|
| 769 |
+
if mapie_path.exists():
|
| 770 |
+
try:
|
| 771 |
+
self.mapie[(prop_key, col)] = joblib.load(mapie_path)
|
| 772 |
+
print(f" MAPIE loaded from {mapie_path.name}")
|
| 773 |
+
except Exception as e:
|
| 774 |
+
print(f" MAPIE load FAILED for ({prop_key}, {col}): {e}")
|
| 775 |
+
else:
|
| 776 |
+
print(f" No MAPIE bundle found (uncertainty will be unavailable)")
|
| 777 |
continue
|
| 778 |
|
| 779 |
+
# infer emb_tag
|
| 780 |
+
if emb_tag is None:
|
| 781 |
+
emb_tag = col
|
| 782 |
+
|
| 783 |
+
model_dir = self._resolve_dir(prop_key, model_name, emb_tag)
|
| 784 |
kind, obj, art = load_artifact(model_dir, self.device)
|
| 785 |
|
| 786 |
+
if kind == "torch_ckpt":
|
| 787 |
+
arch = self._base_arch(model_name)
|
| 788 |
+
model = build_torch_model_from_ckpt(arch, obj, self.device)
|
| 789 |
else:
|
| 790 |
+
model = obj
|
| 791 |
+
|
| 792 |
+
self.models[(prop_key, col)] = model
|
| 793 |
+
self.meta[(prop_key, col)] = {
|
| 794 |
+
"task_type": row.task_type,
|
| 795 |
+
"threshold": thr,
|
| 796 |
+
"artifact": str(art),
|
| 797 |
+
"model_name": model_name,
|
| 798 |
+
"emb_tag": emb_tag,
|
| 799 |
+
"kind": kind,
|
| 800 |
+
}
|
| 801 |
+
|
| 802 |
+
print(f" [LOAD] ({prop_key}, {col}): kind={kind}, model={model_name}, emb={emb_tag}, task={row.task_type}, art={art.name}")
|
| 803 |
+
|
| 804 |
+
# MAPIE: SVR/ElasticNet, XGBoost regression, AND all regression torch_ckpt
|
| 805 |
+
is_regression = row.task_type.lower() == "regression"
|
| 806 |
+
wants_mapie = (
|
| 807 |
+
(model_name in MAPIE_REGRESSION_MODELS and is_regression)
|
| 808 |
+
or (kind == "xgb" and is_regression)
|
| 809 |
+
or (kind == "torch_ckpt" and is_regression)
|
| 810 |
+
)
|
| 811 |
+
if wants_mapie:
|
| 812 |
+
mapie_path = model_dir / "mapie_calibration.joblib"
|
| 813 |
+
if mapie_path.exists():
|
| 814 |
+
try:
|
| 815 |
+
self.mapie[(prop_key, col)] = joblib.load(mapie_path)
|
| 816 |
+
print(f" MAPIE loaded from {mapie_path.name}")
|
| 817 |
+
except Exception as e:
|
| 818 |
+
print(f" MAPIE load FAILED for ({prop_key}, {col}): {e}")
|
| 819 |
+
else:
|
| 820 |
+
print(f" No MAPIE bundle found at {mapie_path} (will fall back to ensemble if available)")
|
| 821 |
+
|
| 822 |
+
# Seed ensembles: DNN only, used when MAPIE not available
|
| 823 |
+
if kind == "torch_ckpt":
|
| 824 |
+
arch = self._base_arch(model_name)
|
| 825 |
+
ens = load_seed_ensemble(model_dir, arch, self.device)
|
| 826 |
+
if ens:
|
| 827 |
+
self.ensembles[(prop_key, col)] = ens
|
| 828 |
+
if (prop_key, col) in self.mapie:
|
| 829 |
+
print(f" Seed ensemble: {len(ens)} seeds loaded (MAPIE takes priority for regression)")
|
| 830 |
+
else:
|
| 831 |
+
unc_type = "ensemble_predictive_entropy" if row.task_type.lower() == "classifier" else "ensemble_std"
|
| 832 |
+
print(f" Seed ensemble: {len(ens)} seeds loaded uncertainty method: {unc_type}")
|
| 833 |
+
else:
|
| 834 |
+
if (prop_key, col) in self.mapie:
|
| 835 |
+
print(f" No seed ensemble (MAPIE covers uncertainty)")
|
| 836 |
+
else:
|
| 837 |
+
print(f" No seed ensemble found (checked: {SEED_DIRS}) - uncertainty unavailable")
|
| 838 |
|
| 839 |
+
# XGBoost/SVM classifiers: binary entropy
|
| 840 |
+
if kind in ("xgb", "joblib") and row.task_type.lower() == "classifier":
|
| 841 |
+
print(f" Uncertainty method: binary_predictive_entropy (computed at inference)")
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 842 |
|
| 843 |
+
@staticmethod
|
| 844 |
+
def _base_arch(model_name: str) -> str:
|
| 845 |
+
if model_name.startswith("transformer"): return "transformer"
|
| 846 |
+
if model_name.startswith("mlp"): return "mlp"
|
| 847 |
+
if model_name.startswith("cnn"): return "cnn"
|
| 848 |
+
return model_name
|
| 849 |
+
|
| 850 |
+
# Feature extraction
|
| 851 |
+
def _get_features(self, prop_key: str, col: str, input_str: str):
|
| 852 |
+
meta = self.meta[(prop_key, col)]
|
| 853 |
+
emb_tag = meta["emb_tag"]
|
| 854 |
+
kind = meta["kind"]
|
| 855 |
if kind == "torch_ckpt":
|
| 856 |
+
return self._embed_unpooled(emb_tag, input_str)
|
| 857 |
+
return self._embed_pooled(emb_tag, input_str)
|
| 858 |
+
|
| 859 |
+
# Uncertainty
|
| 860 |
+
def _compute_uncertainty(self, prop_key: str, col: str, input_str: str,
|
| 861 |
+
score: float) -> Tuple[Any, str]:
|
| 862 |
+
meta = self.meta[(prop_key, col)]
|
| 863 |
+
kind = meta["kind"]
|
| 864 |
+
model_name = meta["model_name"]
|
| 865 |
+
task_type = meta["task_type"].lower()
|
| 866 |
+
emb_tag = meta["emb_tag"]
|
| 867 |
+
|
| 868 |
+
# Pooled embedding for adaptive MAPIE sigma model
|
| 869 |
+
def get_pooled_emb():
|
| 870 |
+
return self._embed_pooled(emb_tag, input_str) if emb_tag else None
|
| 871 |
+
|
| 872 |
+
# DNN
|
| 873 |
+
if kind == "torch_ckpt":
|
| 874 |
+
# Regression: prefer MAPIE if available
|
| 875 |
+
if task_type == "regression":
|
| 876 |
+
mapie_bundle = self.mapie.get((prop_key, col))
|
| 877 |
+
if mapie_bundle:
|
| 878 |
+
emb = get_pooled_emb() if mapie_bundle.get("adaptive") else None
|
| 879 |
+
lo, hi = _mapie_uncertainty(mapie_bundle, score, emb)
|
| 880 |
+
return (lo, hi), "conformal_prediction_interval"
|
| 881 |
+
# Fall back to seed ensemble std
|
| 882 |
+
ens = self.ensembles.get((prop_key, col))
|
| 883 |
+
if ens:
|
| 884 |
+
X, M = self._embed_unpooled(emb_tag, input_str)
|
| 885 |
+
return _ensemble_reg_uncertainty(ens, X, M), "ensemble_std"
|
| 886 |
+
return None, "unavailable (no MAPIE bundle and no seed ensemble)"
|
| 887 |
+
# Classifier: ensemble predictive entropy
|
| 888 |
+
ens = self.ensembles.get((prop_key, col))
|
| 889 |
+
if not ens:
|
| 890 |
+
return None, "unavailable (no seed ensemble found)"
|
| 891 |
+
X, M = self._embed_unpooled(emb_tag, input_str)
|
| 892 |
+
return _ensemble_clf_uncertainty(ens, X, M), "ensemble_predictive_entropy"
|
| 893 |
+
|
| 894 |
+
# XGBoost
|
| 895 |
+
if kind == "xgb":
|
| 896 |
+
if task_type == "classifier":
|
| 897 |
+
return _binary_entropy(score), "binary_predictive_entropy"
|
| 898 |
+
mapie_bundle = self.mapie.get((prop_key, col))
|
| 899 |
+
if mapie_bundle:
|
| 900 |
+
emb = get_pooled_emb() if mapie_bundle.get("adaptive") else None
|
| 901 |
+
lo, hi = _mapie_uncertainty(mapie_bundle, score, emb)
|
| 902 |
+
return (lo, hi), "conformal_prediction_interval"
|
| 903 |
+
return None, "unavailable (no MAPIE bundle for XGBoost regression)"
|
| 904 |
+
|
| 905 |
+
# SVR / ElasticNet regression: MAPIE
|
| 906 |
+
if kind == "joblib" and model_name in MAPIE_REGRESSION_MODELS and task_type == "regression":
|
| 907 |
+
mapie_bundle = self.mapie.get((prop_key, col))
|
| 908 |
+
if mapie_bundle:
|
| 909 |
+
emb = get_pooled_emb() if mapie_bundle.get("adaptive") else None
|
| 910 |
+
lo, hi = _mapie_uncertainty(mapie_bundle, score, emb)
|
| 911 |
+
return (lo, hi), "conformal_prediction_interval"
|
| 912 |
+
return None, "unavailable (MAPIE bundle not found)"
|
| 913 |
+
|
| 914 |
+
# joblib classifiers (SVM, ElasticNet used as classifier)
|
| 915 |
+
if kind == "joblib" and task_type == "classifier":
|
| 916 |
+
return _binary_entropy(score), "binary_predictive_entropy_single_model"
|
| 917 |
+
|
| 918 |
+
return None, "unavailable"
|
| 919 |
+
|
| 920 |
+
def predict_property(self, prop_key: str, col: str, input_str: str,
|
| 921 |
+
uncertainty: bool = False) -> Dict[str, Any]:
|
| 922 |
+
if (prop_key, col) not in self.models:
|
| 923 |
+
raise KeyError(f"No model loaded for ({prop_key}, {col}).")
|
| 924 |
+
|
| 925 |
+
meta = self.meta[(prop_key, col)]
|
| 926 |
+
model = self.models[(prop_key, col)]
|
| 927 |
+
task_type = meta["task_type"].lower()
|
| 928 |
+
thr = meta.get("threshold")
|
| 929 |
+
kind = meta["kind"]
|
| 930 |
+
model_name = meta["model_name"]
|
| 931 |
|
| 932 |
if prop_key == "binding_affinity":
|
| 933 |
raise RuntimeError("Use predict_binding_affinity().")
|
| 934 |
|
| 935 |
+
# DNN
|
| 936 |
if kind == "torch_ckpt":
|
| 937 |
+
X, M = self._get_features(prop_key, col, input_str)
|
| 938 |
with torch.no_grad():
|
| 939 |
+
raw = model(X, M).squeeze().float().cpu().item()
|
| 940 |
+
|
| 941 |
+
if prop_key == "halflife" and col == "wt" and "log" in model_name:
|
| 942 |
+
raw = float(np.expm1(raw))
|
| 943 |
+
|
|
|
|
|
|
|
|
|
|
|
|
|
| 944 |
if task_type == "classifier":
|
| 945 |
+
score = float(1.0 / (1.0 + np.exp(-raw)))
|
| 946 |
+
out = {"property": prop_key, "col": col, "score": score,
|
| 947 |
+
"emb_tag": meta["emb_tag"]}
|
| 948 |
if thr is not None:
|
| 949 |
+
out["label"] = int(score >= float(thr)); out["threshold"] = float(thr)
|
|
|
|
|
|
|
| 950 |
else:
|
| 951 |
+
out = {"property": prop_key, "col": col, "score": float(raw),
|
| 952 |
+
"emb_tag": meta["emb_tag"]}
|
| 953 |
+
|
| 954 |
+
# XGBoost
|
| 955 |
+
elif kind == "xgb":
|
| 956 |
+
feats = self._get_features(prop_key, col, input_str)
|
| 957 |
+
pred = float(model.predict(xgb.DMatrix(feats))[0])
|
| 958 |
+
if prop_key == "halflife" and col == "wt" and "log" in model_name:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 959 |
pred = float(np.expm1(pred))
|
| 960 |
+
out = {"property": prop_key, "col": col, "score": pred,
|
| 961 |
+
"emb_tag": meta["emb_tag"]}
|
| 962 |
+
if task_type == "classifier" and thr is not None:
|
| 963 |
+
out["label"] = int(pred >= float(thr)); out["threshold"] = float(thr)
|
| 964 |
+
|
| 965 |
+
# joblib (SVM / ElasticNet / SVR)
|
| 966 |
+
elif kind == "joblib":
|
| 967 |
+
feats = self._get_features(prop_key, col, input_str)
|
|
|
|
| 968 |
if task_type == "classifier":
|
| 969 |
if hasattr(model, "predict_proba"):
|
| 970 |
pred = float(model.predict_proba(feats)[:, 1][0])
|
| 971 |
+
elif hasattr(model, "decision_function"):
|
| 972 |
+
pred = float(1.0 / (1.0 + np.exp(-model.decision_function(feats)[0])))
|
| 973 |
else:
|
| 974 |
+
pred = float(model.predict(feats)[0])
|
| 975 |
+
out = {"property": prop_key, "col": col, "score": pred,
|
| 976 |
+
"emb_tag": meta["emb_tag"]}
|
|
|
|
|
|
|
|
|
|
| 977 |
if thr is not None:
|
| 978 |
+
out["label"] = int(pred >= float(thr)); out["threshold"] = float(thr)
|
|
|
|
|
|
|
| 979 |
else:
|
| 980 |
pred = float(model.predict(feats)[0])
|
| 981 |
+
out = {"property": prop_key, "col": col, "score": pred,
|
| 982 |
+
"emb_tag": meta["emb_tag"]}
|
| 983 |
+
else:
|
| 984 |
+
raise RuntimeError(f"Unknown kind={kind}")
|
| 985 |
|
| 986 |
+
if uncertainty:
|
| 987 |
+
u_val, u_type = self._compute_uncertainty(prop_key, col, input_str, out["score"])
|
| 988 |
+
out["uncertainty"] = u_val
|
| 989 |
+
out["uncertainty_type"] = u_type
|
|
|
|
|
|
|
|
|
|
|
|
|
| 990 |
|
| 991 |
+
return out
|
|
|
|
| 992 |
|
| 993 |
+
def predict_binding_affinity(self, col: str, target_seq: str, binder_str: str,
|
| 994 |
+
uncertainty: bool = False) -> Dict[str, Any]:
|
| 995 |
+
prop_key = "binding_affinity"
|
| 996 |
+
if (prop_key, col) not in self.models:
|
| 997 |
+
raise KeyError(f"No binding model loaded for ({prop_key}, {col}).")
|
| 998 |
+
|
| 999 |
+
model = self.models[(prop_key, col)]
|
| 1000 |
+
meta = self.meta[(prop_key, col)]
|
| 1001 |
+
arch = meta["model_name"]
|
| 1002 |
+
emb_tag = meta.get("emb_tag")
|
| 1003 |
+
|
| 1004 |
+
if arch == "pooled":
|
| 1005 |
+
t_vec = self.wt_embedder.pooled(target_seq)
|
| 1006 |
+
b_vec = self._get_embedder(emb_tag or col).pooled(binder_str) if emb_tag else \
|
| 1007 |
+
(self.wt_embedder.pooled(binder_str) if col == "wt" else self.smiles_embedder.pooled(binder_str))
|
| 1008 |
with torch.no_grad():
|
| 1009 |
reg, logits = model(t_vec, b_vec)
|
|
|
|
|
|
|
|
|
|
| 1010 |
else:
|
| 1011 |
T, Mt = self.wt_embedder.unpooled(target_seq)
|
| 1012 |
+
binder_emb = self._get_embedder(emb_tag or col) if emb_tag else \
|
| 1013 |
+
(self.wt_embedder if col == "wt" else self.smiles_embedder)
|
| 1014 |
+
B, Mb = binder_emb.unpooled(binder_str)
|
|
|
|
| 1015 |
with torch.no_grad():
|
| 1016 |
reg, logits = model(T, Mt, B, Mb)
|
| 1017 |
+
|
| 1018 |
+
affinity = float(reg.squeeze().cpu().item())
|
| 1019 |
+
cls_logit = int(torch.argmax(logits, dim=-1).cpu().item())
|
| 1020 |
+
cls_thr = affinity_to_class(affinity)
|
| 1021 |
+
names = {0: "High (≥9)", 1: "Moderate (7-9)", 2: "Low (<7)"}
|
| 1022 |
+
|
| 1023 |
+
out = {
|
| 1024 |
+
"property": "binding_affinity",
|
| 1025 |
+
"col": col,
|
| 1026 |
+
"affinity": affinity,
|
| 1027 |
"class_by_threshold": names[cls_thr],
|
| 1028 |
+
"class_by_logits": names[cls_logit],
|
| 1029 |
+
"binding_model": arch,
|
| 1030 |
}
|
| 1031 |
|
| 1032 |
+
if uncertainty:
|
| 1033 |
+
mapie_bundle = self.mapie.get((prop_key, col))
|
| 1034 |
+
if mapie_bundle:
|
| 1035 |
+
if mapie_bundle.get("adaptive") and "sigma_model" in mapie_bundle:
|
| 1036 |
+
# Concatenate target + binder pooled embeddings for sigma model
|
| 1037 |
+
binder_emb_tag = mapie_bundle.get("emb_tag") or col
|
| 1038 |
+
target_emb_tag = mapie_bundle.get("target_emb_tag", "wt")
|
| 1039 |
+
t_vec = self.wt_embedder.pooled(target_seq).cpu().float().numpy()
|
| 1040 |
+
b_vec = self._get_embedder(binder_emb_tag).pooled(binder_str).cpu().float().numpy()
|
| 1041 |
+
emb = np.concatenate([t_vec, b_vec], axis=1)
|
| 1042 |
+
else:
|
| 1043 |
+
emb = None
|
| 1044 |
+
lo, hi = _mapie_uncertainty(mapie_bundle, affinity, emb)
|
| 1045 |
+
out["uncertainty"] = (lo, hi)
|
| 1046 |
+
out["uncertainty_type"] = "conformal_prediction_interval"
|
| 1047 |
+
else:
|
| 1048 |
+
out["uncertainty"] = None
|
| 1049 |
+
out["uncertainty_type"] = "unavailable (no MAPIE bundle found)"
|
| 1050 |
+
|
| 1051 |
+
return out
|
| 1052 |
|
| 1053 |
if __name__ == "__main__":
|
| 1054 |
+
root = Path(__file__).resolve().parent # current script folder
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 1055 |
|
| 1056 |
+
predictor = PeptiVersePredictor(
|
| 1057 |
+
manifest_path=root / "best_models.txt",
|
| 1058 |
+
classifier_weight_root=root
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 1059 |
)
|
| 1060 |
+
print(predictor.training_root)
|
| 1061 |
+
print("MAPIE keys:", list(predictor.mapie.keys()))
|
| 1062 |
+
print("Ensemble keys:", list(predictor.ensembles.keys()))
|
| 1063 |
+
|
| 1064 |
+
seq = "GIGAVLKVLTTGLPALISWIKRKRQQ"
|
| 1065 |
+
smiles = "C(C)C[C@@H]1NC(=O)[C@@H]2CCCN2C(=O)[C@@H](CC(C)C)NC(=O)[C@@H](CC(C)C)N(C)C(=O)[C@H](C)NC(=O)[C@H](Cc2ccccc2)NC1=O"
|
| 1066 |
+
|
| 1067 |
+
print(predictor.predict_property("hemolysis", "wt", seq))
|
| 1068 |
+
print(predictor.predict_property("hemolysis", "smiles", smiles, uncertainty=True))
|
| 1069 |
+
print(predictor.predict_property("nf", "wt", seq, uncertainty=True))
|
| 1070 |
+
print(predictor.predict_property("nf", "smiles", smiles, uncertainty=True))
|
| 1071 |
+
print(predictor.predict_binding_affinity("wt", target_seq=seq, binder_str="GIGAVLKVLT"))
|
| 1072 |
+
print(predictor.predict_binding_affinity("wt", target_seq=seq, binder_str="GIGAVLKVLT", uncertainty=True))
|
| 1073 |
+
seq1 = "GIGAVLKVLTTGLPALISWIKRKRQQ"
|
| 1074 |
+
seq2 = "ACDEFGHIKLMNPQRSTVWY"
|
| 1075 |
|
| 1076 |
+
r1 = predictor.predict_binding_affinity("wt", target_seq=seq2, binder_str="GIGAVLKVLT", uncertainty=True)
|
| 1077 |
+
r2 = predictor.predict_property("nf", "wt", seq1, uncertainty=True)
|
| 1078 |
+
r3 = predictor.predict_property("nf", "wt", seq2, uncertainty=True)
|
| 1079 |
+
print(r1)
|
| 1080 |
+
print(r2)
|
| 1081 |
+
print(r3)
|
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