| screenpipe-pii-redactor |
| Copyright 2026 Mediar, Inc. |
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| This product is a derivative work of the OpenAI Privacy Filter |
| (https://github.com/openai/privacy-filter), licensed under the |
| Apache License, Version 2.0. The full upstream Apache 2.0 license |
| text is preserved in LICENSE.upstream-apache2.txt. |
|
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| The base model architecture, tokenizer, and pretrained weights are the |
| work of OpenAI and are licensed Apache 2.0. screenpipe-pii-redactor |
| extends those weights via supervised fine-tuning on a custom corpus and |
| re-initializes the output head for a 12-label PII taxonomy specific to |
| desktop activity logs. |
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| Significant modifications introduced by this derivative: |
| - Output head re-initialized for a 12-class PII label space |
| (29 rows copied from upstream where labels aligned, 20 rows |
| initialized from random for new classes; see model/finetune_summary.json). |
| - Fine-tuned for 3 epochs on a mixed corpus of: |
| * synthetic accessibility / window-title / OCR data |
| (private — not redistributed) |
| * a 25% slice of ai4privacy/pii-masking-300k (CC-BY-4.0) |
| with labels mapped to the 12-class taxonomy |
| * targeted secret-shape augmentation (private) |
| - Context window n_ctx raised from 128 to 256. |
| - Hyperparameters: batch_size=4, lr=1e-4, weight_decay=0, |
| max_grad_norm=1.0, shuffle_seed=1337. |
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| Distribution license: |
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| - The fine-tuned weights and accompanying materials in this repository |
| (the "Derivative Work") are licensed under CC BY-NC 4.0; see LICENSE. |
| - The Apache 2.0 obligations on the base model are preserved by: |
| (a) shipping LICENSE.upstream-apache2.txt with this repo, |
| (b) attributing OpenAI Privacy Filter in README.md, |
| (c) declaring significant modifications above. |
| - "OpenAI" and "Privacy Filter" are trademarks / brands of OpenAI; this |
| derivative does not use those marks to endorse or suggest endorsement |
| of this work by OpenAI. |
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| Third-party datasets used during fine-tuning: |
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| - ai4privacy/pii-masking-300k |
| https://huggingface.co/datasets/ai4privacy/pii-masking-300k |
| Licensed CC-BY-4.0. |
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| Questions about license compatibility or commercial use: |
| louis@screenpi.pe |
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