Update model card for PATT-Net
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README.md
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# Model Card for PATT-Net
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## Model Details
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- **Architecture:** ProtectedTransferVAD (dual-branch NativeTemporalBackbone)
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- **Base Feature Extractor:** OpenAI CLIP ViT-L/14 (768-dim)
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- **Temporal Modeling:** Bi-directional LSTM with Masked Temporal Dilated Convolutions
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- **Intended Use:** Video Anomaly Detection (VAD) research and controlled ablation studies.
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## Training Data
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- **Pre-training (Temporal Branch):** PreVAD dataset (35,279 videos, distinct from XD-Violence).
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- **Target Fine-tuning:** UCF-Crime dataset.
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## Evaluation and Validation
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- **Metric:** Frame-level AUC and AP, evaluated via center-crop (stride-16) visual-only features.
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- **Selection Criteria:** Best validation video AUC.
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- **Scientific Limits:** The P-B contrast represents the whole system effect (branch mechanism + pretraining). Within this matched frozen-branch design, P-R isolates PreVAD rather than random source initialization. The P-R differences are small and not statistically significant across five seeds (AUC exact two-sided sign-flip `p = 0.1875`).
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## Ethical Considerations and Licenses
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- The repository code is provided under the MIT License. Third-party dataset and model terms continue to apply to data-derived artifacts.
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- Users must comply with the licenses of the underlying third-party datasets (UCF-Crime and PreVAD) and the OpenAI CLIP feature extractor. The repository authors are not responsible for the misuse of these models in surveillance or real-world classification scenarios without appropriate safeguards.
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