Upload model
Browse files- README.md +199 -0
- config.json +35 -0
- hf_configuration.py +93 -0
- mlm.py +486 -0
- model.safetensors +3 -0
README.md
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---
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library_name: transformers
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tags: []
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---
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# Model Card for Model ID
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<!-- Provide a quick summary of what the model is/does. -->
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## Model Details
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### Model Description
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<!-- Provide a longer summary of what this model is. -->
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This is the model card of a 🤗 transformers model that has been pushed on the Hub. This model card has been automatically generated.
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- **Developed by:** [More Information Needed]
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- **Funded by [optional]:** [More Information Needed]
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- **Shared by [optional]:** [More Information Needed]
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- **Model type:** [More Information Needed]
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- **Language(s) (NLP):** [More Information Needed]
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- **License:** [More Information Needed]
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- **Finetuned from model [optional]:** [More Information Needed]
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### Model Sources [optional]
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<!-- Provide the basic links for the model. -->
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- **Repository:** [More Information Needed]
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- **Paper [optional]:** [More Information Needed]
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- **Demo [optional]:** [More Information Needed]
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## Uses
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<!-- Address questions around how the model is intended to be used, including the foreseeable users of the model and those affected by the model. -->
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### Direct Use
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<!-- This section is for the model use without fine-tuning or plugging into a larger ecosystem/app. -->
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[More Information Needed]
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### Downstream Use [optional]
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<!-- This section is for the model use when fine-tuned for a task, or when plugged into a larger ecosystem/app -->
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[More Information Needed]
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### Out-of-Scope Use
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<!-- This section addresses misuse, malicious use, and uses that the model will not work well for. -->
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[More Information Needed]
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## Bias, Risks, and Limitations
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<!-- This section is meant to convey both technical and sociotechnical limitations. -->
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[More Information Needed]
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### Recommendations
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<!-- This section is meant to convey recommendations with respect to the bias, risk, and technical limitations. -->
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Users (both direct and downstream) should be made aware of the risks, biases and limitations of the model. More information needed for further recommendations.
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## How to Get Started with the Model
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Use the code below to get started with the model.
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[More Information Needed]
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## Training Details
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### Training Data
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<!-- This should link to a Dataset Card, perhaps with a short stub of information on what the training data is all about as well as documentation related to data pre-processing or additional filtering. -->
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[More Information Needed]
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### Training Procedure
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<!-- This relates heavily to the Technical Specifications. Content here should link to that section when it is relevant to the training procedure. -->
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#### Preprocessing [optional]
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[More Information Needed]
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#### Training Hyperparameters
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- **Training regime:** [More Information Needed] <!--fp32, fp16 mixed precision, bf16 mixed precision, bf16 non-mixed precision, fp16 non-mixed precision, fp8 mixed precision -->
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#### Speeds, Sizes, Times [optional]
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<!-- This section provides information about throughput, start/end time, checkpoint size if relevant, etc. -->
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[More Information Needed]
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## Evaluation
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<!-- This section describes the evaluation protocols and provides the results. -->
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### Testing Data, Factors & Metrics
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#### Testing Data
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<!-- This should link to a Dataset Card if possible. -->
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[More Information Needed]
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#### Factors
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<!-- These are the things the evaluation is disaggregating by, e.g., subpopulations or domains. -->
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[More Information Needed]
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#### Metrics
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<!-- These are the evaluation metrics being used, ideally with a description of why. -->
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[More Information Needed]
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### Results
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[More Information Needed]
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#### Summary
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## Model Examination [optional]
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<!-- Relevant interpretability work for the model goes here -->
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[More Information Needed]
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## Environmental Impact
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<!-- Total emissions (in grams of CO2eq) and additional considerations, such as electricity usage, go here. Edit the suggested text below accordingly -->
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Carbon emissions can be estimated using the [Machine Learning Impact calculator](https://mlco2.github.io/impact#compute) presented in [Lacoste et al. (2019)](https://arxiv.org/abs/1910.09700).
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- **Hardware Type:** [More Information Needed]
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- **Hours used:** [More Information Needed]
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- **Cloud Provider:** [More Information Needed]
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- **Compute Region:** [More Information Needed]
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- **Carbon Emitted:** [More Information Needed]
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## Technical Specifications [optional]
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### Model Architecture and Objective
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[More Information Needed]
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### Compute Infrastructure
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[More Information Needed]
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#### Hardware
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[More Information Needed]
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#### Software
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[More Information Needed]
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## Citation [optional]
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<!-- If there is a paper or blog post introducing the model, the APA and Bibtex information for that should go in this section. -->
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**BibTeX:**
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[More Information Needed]
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**APA:**
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[More Information Needed]
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## Glossary [optional]
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<!-- If relevant, include terms and calculations in this section that can help readers understand the model or model card. -->
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[More Information Needed]
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## More Information [optional]
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[More Information Needed]
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## Model Card Authors [optional]
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[More Information Needed]
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## Model Card Contact
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[More Information Needed]
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config.json
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{
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"_name_or_path": "FOR_JOSEPH/NRJ-BASE-125K",
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"activation": "relu",
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"alpha": 1.0,
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"architectures": [
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"BertEnergyModelForMaskedLM"
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],
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"attention_probs_dropout_prob": 0.0,
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"auto_map": {
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"AutoConfig": "hf_configuration.BertEnergyConfig",
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"AutoModelForMaskedLM": "mlm.BertEnergyModelForMaskedLM"
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},
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"beta": null,
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"bias": true,
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"compile": true,
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"embedding_dim": 768,
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"hidden_dropout_prob": 0.1,
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"hidden_size": 3072,
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"initializer_hopfield_range": 0.002,
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"initializer_range": 0.02,
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"intermediate_size": 12288,
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"layer_norm_eps": 1e-12,
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"max_position_embeddings": 512,
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"model_type": "bert_energy",
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"num_attention_heads": 12,
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"num_hidden_layers": 12,
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"pad_token_id": 3,
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"path": null,
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"positional": true,
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"share_layers": true,
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"tie_word_embeddings": false,
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"torch_dtype": "float32",
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"transformers_version": "4.49.0",
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"vocab_size": 30000
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}
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hf_configuration.py
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from transformers import PretrainedConfig
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class BertEnergyConfig(PretrainedConfig):
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model_type = "bert_energy"
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def __init__(
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self,
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path: str | None = None,
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alpha: float = 1.0,
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beta: float | None = None,
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vocab_size: int = 30000,
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hidden_size: int = 768,
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embedding_dim: int | None = None,
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num_hidden_layers: int = 12,
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num_attention_heads: int = 12,
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intermediate_size: int | None = None,
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activation: str = "relu",
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positional: bool = True,
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share_layers: bool = False,
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layer_norm_eps: float = 1e-12,
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initializer_range: float = 0.02,
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initializer_hopfield_range: float = 0.002,
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hidden_dropout_prob: float = 0.1,
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attention_probs_dropout_prob: float = 0.1,
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max_position_embeddings: int = 512,
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tie_word_embeddings: bool = True,
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bias: bool = True,
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compile: bool = False,
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pad_token_id: int | None = None,
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problem_type: str | None = None,
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**kwargs,
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):
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super().__init__(pad_token_id=pad_token_id, **kwargs)
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self.path = path
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# Energy-specific parameters
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self.alpha = alpha
|
| 40 |
+
self.beta = beta
|
| 41 |
+
|
| 42 |
+
# Vocabulary / dimensions
|
| 43 |
+
self.vocab_size = vocab_size
|
| 44 |
+
self.hidden_size = hidden_size
|
| 45 |
+
self.embedding_dim = embedding_dim if embedding_dim is not None else hidden_size
|
| 46 |
+
|
| 47 |
+
# Transformer architecture
|
| 48 |
+
self.num_hidden_layers = num_hidden_layers
|
| 49 |
+
self.num_attention_heads = num_attention_heads
|
| 50 |
+
self.intermediate_size = (
|
| 51 |
+
intermediate_size if intermediate_size is not None else hidden_size * 4
|
| 52 |
+
)
|
| 53 |
+
self.activation = activation
|
| 54 |
+
self.positional = positional
|
| 55 |
+
self.share_layers = share_layers
|
| 56 |
+
self.tie_word_embeddings = tie_word_embeddings
|
| 57 |
+
self.bias = bias
|
| 58 |
+
|
| 59 |
+
# Regularization / initialization
|
| 60 |
+
self.layer_norm_eps = layer_norm_eps
|
| 61 |
+
self.initializer_range = initializer_range
|
| 62 |
+
self.initializer_hopfield_range = initializer_hopfield_range
|
| 63 |
+
self.hidden_dropout_prob = hidden_dropout_prob
|
| 64 |
+
self.attention_probs_dropout_prob = attention_probs_dropout_prob
|
| 65 |
+
|
| 66 |
+
# Sequence length
|
| 67 |
+
self.max_position_embeddings = max_position_embeddings
|
| 68 |
+
|
| 69 |
+
# Misc
|
| 70 |
+
self.compile = compile
|
| 71 |
+
self.problem_type = problem_type
|
| 72 |
+
|
| 73 |
+
# ---- Validation ----
|
| 74 |
+
if self.embedding_dim % self.num_attention_heads != 0:
|
| 75 |
+
raise ValueError("embedding_dim must be divisible by num_attention_heads")
|
| 76 |
+
|
| 77 |
+
if self.hidden_size <= 0:
|
| 78 |
+
raise ValueError("hidden_size must be > 0")
|
| 79 |
+
|
| 80 |
+
if self.embedding_dim <= 0:
|
| 81 |
+
raise ValueError("embedding_dim must be > 0")
|
| 82 |
+
|
| 83 |
+
if self.num_hidden_layers <= 0:
|
| 84 |
+
raise ValueError("num_hidden_layers must be > 0")
|
| 85 |
+
|
| 86 |
+
if self.num_attention_heads <= 0:
|
| 87 |
+
raise ValueError("num_attention_heads must be > 0")
|
| 88 |
+
|
| 89 |
+
if self.max_position_embeddings <= 0:
|
| 90 |
+
raise ValueError("max_position_embeddings must be > 0")
|
| 91 |
+
|
| 92 |
+
if self.activation not in ["relu", "gelu", "softmax"]:
|
| 93 |
+
raise ValueError("activation must be one of: relu, gelu, softmax")
|
mlm.py
ADDED
|
@@ -0,0 +1,486 @@
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|
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|
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|
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|
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|
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|
|
|
|
|
|
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|
|
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|
|
|
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|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 1 |
+
import torch
|
| 2 |
+
import torch.nn as nn
|
| 3 |
+
from torch.nn.functional import gelu
|
| 4 |
+
from torch.nn import BCEWithLogitsLoss, CrossEntropyLoss, MSELoss
|
| 5 |
+
|
| 6 |
+
from transformers import PreTrainedModel
|
| 7 |
+
from transformers.modeling_outputs import (
|
| 8 |
+
BaseModelOutput,
|
| 9 |
+
MaskedLMOutput,
|
| 10 |
+
SequenceClassifierOutput,
|
| 11 |
+
)
|
| 12 |
+
|
| 13 |
+
from hopfield import HopfieldLayer
|
| 14 |
+
from hf_configuration import BertEnergyConfig
|
| 15 |
+
from positional import PositionalEncoding
|
| 16 |
+
|
| 17 |
+
|
| 18 |
+
class EnergyLMHead(nn.Module):
|
| 19 |
+
"""
|
| 20 |
+
MLM head for the energy backbone.
|
| 21 |
+
|
| 22 |
+
Architecture:
|
| 23 |
+
hidden -> dense -> gelu -> layer_norm -> decoder(vocab)
|
| 24 |
+
"""
|
| 25 |
+
|
| 26 |
+
def __init__(self, config):
|
| 27 |
+
super().__init__()
|
| 28 |
+
self.dense = nn.Linear(config.embedding_dim, config.embedding_dim)
|
| 29 |
+
self.layer_norm = nn.LayerNorm(
|
| 30 |
+
config.embedding_dim,
|
| 31 |
+
eps=config.layer_norm_eps,
|
| 32 |
+
)
|
| 33 |
+
self.dropout = nn.Dropout(config.hidden_dropout_prob)
|
| 34 |
+
|
| 35 |
+
self.decoder = nn.Linear(config.embedding_dim, config.vocab_size, bias=True)
|
| 36 |
+
|
| 37 |
+
@property
|
| 38 |
+
def bias(self):
|
| 39 |
+
return self.decoder.bias
|
| 40 |
+
|
| 41 |
+
def forward(self, hidden_states):
|
| 42 |
+
x = self.dense(hidden_states)
|
| 43 |
+
x = gelu(x)
|
| 44 |
+
x = self.layer_norm(x)
|
| 45 |
+
x = self.dropout(x)
|
| 46 |
+
x = self.decoder(x)
|
| 47 |
+
return x
|
| 48 |
+
|
| 49 |
+
def _tie_weights(self):
|
| 50 |
+
pass
|
| 51 |
+
|
| 52 |
+
class AlbertMLMHead(nn.Module):
|
| 53 |
+
"""
|
| 54 |
+
ALBERT-style MLM head:
|
| 55 |
+
hidden (H) -> embedding (E) -> LN -> vocab (V)
|
| 56 |
+
"""
|
| 57 |
+
|
| 58 |
+
def __init__(self, config):
|
| 59 |
+
super().__init__()
|
| 60 |
+
self.dense = nn.Linear(config.hidden_size, config.embedding_dim)
|
| 61 |
+
self.layer_norm = nn.LayerNorm(config.embedding_dim, eps=config.layer_norm_eps)
|
| 62 |
+
self.decoder = nn.Linear(config.embedding_dim, config.vocab_size, bias=True)
|
| 63 |
+
|
| 64 |
+
def forward(self, hidden_states):
|
| 65 |
+
x = self.dense(hidden_states)
|
| 66 |
+
x = gelu(x)
|
| 67 |
+
x = self.layer_norm(x)
|
| 68 |
+
return self.decoder(x)
|
| 69 |
+
|
| 70 |
+
|
| 71 |
+
class MLMHead(nn.Module):
|
| 72 |
+
"""
|
| 73 |
+
Standard BERT/RoBERTa-style MLM head.
|
| 74 |
+
"""
|
| 75 |
+
|
| 76 |
+
def __init__(self, input_dim, hidden_dim, config):
|
| 77 |
+
super().__init__()
|
| 78 |
+
self.dense = nn.Linear(input_dim, hidden_dim)
|
| 79 |
+
self.layer_norm = nn.LayerNorm(hidden_dim, eps=config.layer_norm_eps)
|
| 80 |
+
self.decoder = nn.Linear(hidden_dim, config.vocab_size, bias=True)
|
| 81 |
+
|
| 82 |
+
@property
|
| 83 |
+
def bias(self):
|
| 84 |
+
return self.decoder.bias
|
| 85 |
+
|
| 86 |
+
def forward(self, features, **kwargs):
|
| 87 |
+
x = self.dense(features)
|
| 88 |
+
x = gelu(x)
|
| 89 |
+
x = self.layer_norm(x)
|
| 90 |
+
x = self.decoder(x)
|
| 91 |
+
return x
|
| 92 |
+
|
| 93 |
+
def _tie_weights(self):
|
| 94 |
+
pass
|
| 95 |
+
|
| 96 |
+
|
| 97 |
+
class BertPreTrainedModel(PreTrainedModel):
|
| 98 |
+
"""
|
| 99 |
+
Common pretrained model base.
|
| 100 |
+
"""
|
| 101 |
+
config_class = BertEnergyConfig
|
| 102 |
+
|
| 103 |
+
def _init_weights(self, module):
|
| 104 |
+
if isinstance(module, nn.Linear):
|
| 105 |
+
module.weight.data.normal_(mean=0.0, std=self.config.initializer_range)
|
| 106 |
+
if module.bias is not None:
|
| 107 |
+
module.bias.data.zero_()
|
| 108 |
+
|
| 109 |
+
elif isinstance(module, nn.Embedding):
|
| 110 |
+
module.weight.data.normal_(mean=0.0, std=self.config.initializer_range)
|
| 111 |
+
if module.padding_idx is not None:
|
| 112 |
+
module.weight.data[module.padding_idx].zero_()
|
| 113 |
+
|
| 114 |
+
elif isinstance(module, nn.LayerNorm):
|
| 115 |
+
module.bias.data.zero_()
|
| 116 |
+
module.weight.data.fill_(1.0)
|
| 117 |
+
|
| 118 |
+
|
| 119 |
+
class BertModel(BertPreTrainedModel):
|
| 120 |
+
"""
|
| 121 |
+
Standard transformer backbone.
|
| 122 |
+
Outputs: last hidden state, optional hidden state history.
|
| 123 |
+
"""
|
| 124 |
+
|
| 125 |
+
config_class = BertEnergyConfig
|
| 126 |
+
|
| 127 |
+
def __init__(self, config, add_pooling_layer=True, pad_idx=None, **kwargs):
|
| 128 |
+
super().__init__(config)
|
| 129 |
+
|
| 130 |
+
self.Emb_in = nn.Embedding(config.vocab_size, config.embedding_dim, padding_idx=pad_idx)
|
| 131 |
+
self.posn = (
|
| 132 |
+
PositionalEncoding(
|
| 133 |
+
config.embedding_dim,
|
| 134 |
+
max_len=config.max_position_embeddings,
|
| 135 |
+
)
|
| 136 |
+
if config.positional
|
| 137 |
+
else None
|
| 138 |
+
)
|
| 139 |
+
self.embed_norm = nn.LayerNorm(config.embedding_dim, eps=config.layer_norm_eps)
|
| 140 |
+
self.embed_dropout = nn.Dropout(config.hidden_dropout_prob)
|
| 141 |
+
|
| 142 |
+
self.num_layers = config.num_hidden_layers
|
| 143 |
+
self.share_layers = config.share_layers
|
| 144 |
+
|
| 145 |
+
if self.share_layers:
|
| 146 |
+
self.embedding_hidden_in = nn.Linear(config.embedding_dim, config.hidden_size)
|
| 147 |
+
|
| 148 |
+
layer = nn.TransformerEncoderLayer(
|
| 149 |
+
d_model=config.hidden_size,
|
| 150 |
+
nhead=config.num_attention_heads,
|
| 151 |
+
activation=config.activation,
|
| 152 |
+
dim_feedforward=config.hidden_size,
|
| 153 |
+
dropout=config.hidden_dropout_prob,
|
| 154 |
+
layer_norm_eps=config.layer_norm_eps,
|
| 155 |
+
batch_first=True,
|
| 156 |
+
norm_first=True,
|
| 157 |
+
)
|
| 158 |
+
self.layers = nn.ModuleList([layer])
|
| 159 |
+
self.output_dim = config.hidden_size
|
| 160 |
+
else:
|
| 161 |
+
self.embedding_hidden_in = None
|
| 162 |
+
self.layers = nn.ModuleList(
|
| 163 |
+
[
|
| 164 |
+
nn.TransformerEncoderLayer(
|
| 165 |
+
d_model=config.embedding_dim,
|
| 166 |
+
nhead=config.num_attention_heads,
|
| 167 |
+
dim_feedforward=config.intermediate_size,
|
| 168 |
+
dropout=config.hidden_dropout_prob,
|
| 169 |
+
layer_norm_eps=config.layer_norm_eps,
|
| 170 |
+
batch_first=True,
|
| 171 |
+
norm_first=True,
|
| 172 |
+
)
|
| 173 |
+
for _ in range(config.num_hidden_layers)
|
| 174 |
+
]
|
| 175 |
+
)
|
| 176 |
+
self.output_dim = config.embedding_dim
|
| 177 |
+
|
| 178 |
+
self.post_init()
|
| 179 |
+
|
| 180 |
+
def get_input_embeddings(self):
|
| 181 |
+
return self.Emb_in
|
| 182 |
+
|
| 183 |
+
def set_input_embeddings(self, new_embeddings):
|
| 184 |
+
self.Emb_in = new_embeddings
|
| 185 |
+
|
| 186 |
+
def forward(self, input_ids, attention_mask=None, **kwargs):
|
| 187 |
+
x = self.Emb_in(input_ids)
|
| 188 |
+
|
| 189 |
+
if self.posn is not None:
|
| 190 |
+
x = x + self.posn(x)
|
| 191 |
+
|
| 192 |
+
x = self.embed_norm(x)
|
| 193 |
+
x = self.embed_dropout(x)
|
| 194 |
+
|
| 195 |
+
if self.share_layers:
|
| 196 |
+
x = self.embedding_hidden_in(x)
|
| 197 |
+
|
| 198 |
+
history = None if self.training else [x]
|
| 199 |
+
|
| 200 |
+
pad_mask = None
|
| 201 |
+
if attention_mask is not None:
|
| 202 |
+
pad_mask = ~attention_mask.to(torch.bool)
|
| 203 |
+
|
| 204 |
+
for i in range(self.num_layers):
|
| 205 |
+
layer = self.layers[0] if self.share_layers else self.layers[i]
|
| 206 |
+
x = layer(x, src_key_padding_mask=pad_mask)
|
| 207 |
+
|
| 208 |
+
if not self.training:
|
| 209 |
+
history.append(x)
|
| 210 |
+
|
| 211 |
+
return BaseModelOutput(
|
| 212 |
+
last_hidden_state=x,
|
| 213 |
+
hidden_states=history,
|
| 214 |
+
attentions=None,
|
| 215 |
+
)
|
| 216 |
+
|
| 217 |
+
|
| 218 |
+
class BertModelForMaskedLM(BertPreTrainedModel):
|
| 219 |
+
"""
|
| 220 |
+
Standard transformer model for MLM.
|
| 221 |
+
"""
|
| 222 |
+
|
| 223 |
+
config_class = BertEnergyConfig
|
| 224 |
+
ignore_index = -100
|
| 225 |
+
_tied_weights_keys = ["lm_head.decoder.weight"]
|
| 226 |
+
|
| 227 |
+
def __init__(self, config, add_pooling_layer=True, pad_idx=None):
|
| 228 |
+
super().__init__(config)
|
| 229 |
+
self.config = config
|
| 230 |
+
|
| 231 |
+
self.model = BertModel(config, pad_idx=pad_idx)
|
| 232 |
+
|
| 233 |
+
if config.share_layers:
|
| 234 |
+
self.lm_head = AlbertMLMHead(config)
|
| 235 |
+
else:
|
| 236 |
+
self.lm_head = MLMHead(config.embedding_dim, config.embedding_dim, config)
|
| 237 |
+
|
| 238 |
+
self.post_init()
|
| 239 |
+
|
| 240 |
+
if self.config.tie_word_embeddings:
|
| 241 |
+
self.tie_weights()
|
| 242 |
+
|
| 243 |
+
def get_input_embeddings(self):
|
| 244 |
+
return self.model.Emb_in
|
| 245 |
+
|
| 246 |
+
def set_input_embeddings(self, new_embeddings):
|
| 247 |
+
self.model.set_input_embeddings(new_embeddings)
|
| 248 |
+
|
| 249 |
+
def get_output_embeddings(self):
|
| 250 |
+
return self.lm_head.decoder
|
| 251 |
+
|
| 252 |
+
def set_output_embeddings(self, new_embeddings):
|
| 253 |
+
self.lm_head.decoder = new_embeddings
|
| 254 |
+
|
| 255 |
+
def forward(self, input_ids, attention_mask=None, labels=None, **kwargs):
|
| 256 |
+
outputs = self.model(input_ids, attention_mask=attention_mask, **kwargs)
|
| 257 |
+
logits = self.lm_head(outputs.last_hidden_state)
|
| 258 |
+
|
| 259 |
+
loss = None
|
| 260 |
+
if labels is not None:
|
| 261 |
+
if attention_mask is not None:
|
| 262 |
+
labels = labels.masked_fill(attention_mask == 0, self.ignore_index)
|
| 263 |
+
|
| 264 |
+
loss_fct = CrossEntropyLoss()
|
| 265 |
+
loss = loss_fct(logits.view(-1, self.config.vocab_size), labels.view(-1))
|
| 266 |
+
|
| 267 |
+
return MaskedLMOutput(
|
| 268 |
+
loss=loss,
|
| 269 |
+
logits=logits,
|
| 270 |
+
hidden_states=outputs.hidden_states,
|
| 271 |
+
attentions=outputs.attentions,
|
| 272 |
+
)
|
| 273 |
+
|
| 274 |
+
|
| 275 |
+
class BertModelForSequenceClassification(BertPreTrainedModel):
|
| 276 |
+
"""
|
| 277 |
+
Standard transformer model for sequence classification.
|
| 278 |
+
"""
|
| 279 |
+
|
| 280 |
+
config_class = BertEnergyConfig
|
| 281 |
+
|
| 282 |
+
def __init__(
|
| 283 |
+
self,
|
| 284 |
+
config,
|
| 285 |
+
add_pooling_layer=True,
|
| 286 |
+
pad_idx=None,
|
| 287 |
+
num_labels=2,
|
| 288 |
+
classifier_dropout=None,
|
| 289 |
+
return_dict=True,
|
| 290 |
+
):
|
| 291 |
+
super().__init__(config)
|
| 292 |
+
self.config = config
|
| 293 |
+
self.num_labels = num_labels
|
| 294 |
+
self.return_dict = return_dict
|
| 295 |
+
|
| 296 |
+
self.model = BertModel(config, pad_idx=pad_idx)
|
| 297 |
+
|
| 298 |
+
output_dim = self.model.output_dim
|
| 299 |
+
dropout = classifier_dropout if classifier_dropout is not None else config.hidden_dropout_prob
|
| 300 |
+
|
| 301 |
+
self.dropout = nn.Dropout(dropout)
|
| 302 |
+
self.norm = nn.LayerNorm(output_dim, eps=config.layer_norm_eps)
|
| 303 |
+
self.classifier = nn.Linear(output_dim, num_labels)
|
| 304 |
+
|
| 305 |
+
self.post_init()
|
| 306 |
+
|
| 307 |
+
def forward(self, input_ids, labels=None, return_dict=None, **kwargs):
|
| 308 |
+
if return_dict is None:
|
| 309 |
+
return_dict = self.return_dict
|
| 310 |
+
|
| 311 |
+
outputs = self.model(input_ids, **kwargs)
|
| 312 |
+
last_hidden_state = self.norm(outputs.last_hidden_state)
|
| 313 |
+
|
| 314 |
+
x = last_hidden_state[:, 0, :]
|
| 315 |
+
x = self.dropout(x)
|
| 316 |
+
logits = self.classifier(x)
|
| 317 |
+
|
| 318 |
+
loss = None
|
| 319 |
+
if labels is not None:
|
| 320 |
+
labels = labels.to(logits.device)
|
| 321 |
+
|
| 322 |
+
if self.config.problem_type is None:
|
| 323 |
+
if self.num_labels == 1:
|
| 324 |
+
self.config.problem_type = "regression"
|
| 325 |
+
elif self.num_labels > 1 and labels.dtype in (torch.long, torch.int):
|
| 326 |
+
self.config.problem_type = "single_label_classification"
|
| 327 |
+
else:
|
| 328 |
+
self.config.problem_type = "multi_label_classification"
|
| 329 |
+
|
| 330 |
+
if self.config.problem_type == "regression":
|
| 331 |
+
loss_fct = MSELoss()
|
| 332 |
+
loss = loss_fct(logits.squeeze(), labels.squeeze()) if self.num_labels == 1 else loss_fct(logits, labels)
|
| 333 |
+
elif self.config.problem_type == "single_label_classification":
|
| 334 |
+
loss_fct = CrossEntropyLoss()
|
| 335 |
+
loss = loss_fct(logits.view(-1, self.num_labels), labels.view(-1))
|
| 336 |
+
else:
|
| 337 |
+
loss_fct = BCEWithLogitsLoss()
|
| 338 |
+
loss = loss_fct(logits, labels)
|
| 339 |
+
|
| 340 |
+
if not return_dict:
|
| 341 |
+
output = (logits, outputs.hidden_states, outputs.attentions)
|
| 342 |
+
return ((loss,) + output) if loss is not None else output
|
| 343 |
+
|
| 344 |
+
return SequenceClassifierOutput(
|
| 345 |
+
loss=loss,
|
| 346 |
+
logits=logits,
|
| 347 |
+
hidden_states=outputs.hidden_states,
|
| 348 |
+
attentions=outputs.attentions,
|
| 349 |
+
)
|
| 350 |
+
|
| 351 |
+
|
| 352 |
+
class BertEnergyModel(BertPreTrainedModel):
|
| 353 |
+
"""
|
| 354 |
+
Energy-based backbone.
|
| 355 |
+
|
| 356 |
+
Update rule:
|
| 357 |
+
g = LayerNorm(X)
|
| 358 |
+
X <- X - alpha * layer(g)
|
| 359 |
+
"""
|
| 360 |
+
|
| 361 |
+
config_class = BertEnergyConfig
|
| 362 |
+
|
| 363 |
+
def __init__(self, config, add_pooling_layer=True, pad_idx=None, **kwargs):
|
| 364 |
+
super().__init__(config)
|
| 365 |
+
|
| 366 |
+
self.config = config
|
| 367 |
+
self.num_layers = config.num_hidden_layers
|
| 368 |
+
self.alpha = config.alpha
|
| 369 |
+
|
| 370 |
+
self.Emb_in = nn.Embedding(
|
| 371 |
+
config.vocab_size,
|
| 372 |
+
config.embedding_dim,
|
| 373 |
+
padding_idx=pad_idx,
|
| 374 |
+
)
|
| 375 |
+
|
| 376 |
+
self.posn = (
|
| 377 |
+
PositionalEncoding(
|
| 378 |
+
config.embedding_dim,
|
| 379 |
+
max_len=config.max_position_embeddings,
|
| 380 |
+
)
|
| 381 |
+
if config.positional
|
| 382 |
+
else None
|
| 383 |
+
)
|
| 384 |
+
|
| 385 |
+
self.embed_dropout = nn.Dropout(config.hidden_dropout_prob)
|
| 386 |
+
|
| 387 |
+
# External normalization, as in the original ET implementation
|
| 388 |
+
self.norm = nn.LayerNorm(config.embedding_dim, eps=config.layer_norm_eps)
|
| 389 |
+
|
| 390 |
+
self.layer = HopfieldLayer(
|
| 391 |
+
embedding_dim=config.embedding_dim,
|
| 392 |
+
nheads=config.num_attention_heads,
|
| 393 |
+
forward_memories=config.hidden_size,
|
| 394 |
+
forward_activation=config.activation,
|
| 395 |
+
bias=config.bias,
|
| 396 |
+
beta=config.beta,
|
| 397 |
+
device=None,
|
| 398 |
+
dropout=0.0,
|
| 399 |
+
initializer_range=config.initializer_hopfield_range,
|
| 400 |
+
)
|
| 401 |
+
|
| 402 |
+
self.post_init()
|
| 403 |
+
|
| 404 |
+
def set_input_embeddings(self, new_embeddings):
|
| 405 |
+
self.Emb_in = new_embeddings
|
| 406 |
+
|
| 407 |
+
def forward(self, input_ids, attention_mask=None, **kwargs):
|
| 408 |
+
x = self.Emb_in(input_ids)
|
| 409 |
+
|
| 410 |
+
if self.posn is not None:
|
| 411 |
+
x = x + self.posn(x)
|
| 412 |
+
|
| 413 |
+
x = self.embed_dropout(x)
|
| 414 |
+
|
| 415 |
+
keep_mask = attention_mask.to(torch.bool) if attention_mask is not None else None
|
| 416 |
+
history = None if self.training else [x]
|
| 417 |
+
|
| 418 |
+
for _ in range(self.num_layers):
|
| 419 |
+
g = self.norm(x)
|
| 420 |
+
update = self.layer(
|
| 421 |
+
g,
|
| 422 |
+
attention_mask=keep_mask,
|
| 423 |
+
)
|
| 424 |
+
x = x - self.alpha * update
|
| 425 |
+
|
| 426 |
+
if not self.training:
|
| 427 |
+
history.append(x)
|
| 428 |
+
|
| 429 |
+
return BaseModelOutput(
|
| 430 |
+
last_hidden_state=x,
|
| 431 |
+
hidden_states=history,
|
| 432 |
+
attentions=None,
|
| 433 |
+
)
|
| 434 |
+
|
| 435 |
+
|
| 436 |
+
class BertEnergyModelForMaskedLM(BertPreTrainedModel):
|
| 437 |
+
"""
|
| 438 |
+
Energy-based model for MLM.
|
| 439 |
+
"""
|
| 440 |
+
|
| 441 |
+
config_class = BertEnergyConfig
|
| 442 |
+
ignore_index = -100
|
| 443 |
+
_tied_weights_keys = ["lm_head.decoder.weight"]
|
| 444 |
+
|
| 445 |
+
def __init__(self, config, add_pooling_layer=True, pad_idx=None):
|
| 446 |
+
super().__init__(config)
|
| 447 |
+
self.config = config
|
| 448 |
+
|
| 449 |
+
self.model = BertEnergyModel(config, pad_idx=pad_idx)
|
| 450 |
+
self.lm_head = EnergyLMHead(config)
|
| 451 |
+
|
| 452 |
+
self.post_init()
|
| 453 |
+
|
| 454 |
+
if self.config.tie_word_embeddings:
|
| 455 |
+
self.tie_weights()
|
| 456 |
+
|
| 457 |
+
def get_input_embeddings(self):
|
| 458 |
+
return self.model.Emb_in
|
| 459 |
+
|
| 460 |
+
def set_input_embeddings(self, new_embeddings):
|
| 461 |
+
self.model.set_input_embeddings(new_embeddings)
|
| 462 |
+
|
| 463 |
+
def get_output_embeddings(self):
|
| 464 |
+
return self.lm_head.decoder
|
| 465 |
+
|
| 466 |
+
def set_output_embeddings(self, new_embeddings):
|
| 467 |
+
self.lm_head.decoder = new_embeddings
|
| 468 |
+
|
| 469 |
+
def forward(self, input_ids, attention_mask=None, labels=None, **kwargs):
|
| 470 |
+
outputs = self.model(input_ids, attention_mask=attention_mask, **kwargs)
|
| 471 |
+
logits = self.lm_head(outputs.last_hidden_state)
|
| 472 |
+
|
| 473 |
+
loss = None
|
| 474 |
+
if labels is not None:
|
| 475 |
+
if attention_mask is not None:
|
| 476 |
+
labels = labels.masked_fill(attention_mask == 0, self.ignore_index)
|
| 477 |
+
|
| 478 |
+
loss_fct = CrossEntropyLoss()
|
| 479 |
+
loss = loss_fct(logits.view(-1, self.config.vocab_size), labels.view(-1))
|
| 480 |
+
|
| 481 |
+
return MaskedLMOutput(
|
| 482 |
+
loss=loss,
|
| 483 |
+
logits=logits,
|
| 484 |
+
hidden_states=outputs.hidden_states,
|
| 485 |
+
attentions=outputs.attentions,
|
| 486 |
+
)
|
model.safetensors
ADDED
|
@@ -0,0 +1,3 @@
|
|
|
|
|
|
|
|
|
|
|
|
|
| 1 |
+
version https://git-lfs.github.com/spec/v1
|
| 2 |
+
oid sha256:03d5ca8d5fb8ad089ef941dce630aceb768e8c556cce1279165640d0ce2b3278
|
| 3 |
+
size 200983936
|