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# convnext-weakfix — data + kết quả + checkpoint
Replicate phương pháp `v5_weakfix` (hoangtuan) lên **DINOv3 ConvNeXt-Tiny** (`dinov3_next_cnn`).
Cùng data / kỹ thuật / hyperparam, identity-disjoint. Doc đầy đủ tại repo gốc:
`/workspace/quangmanh/deepfake/doc/convnext_weakfix/`.
## Data (data/)
- `train_v5_combined_universal_kaggle_boost.csv` — 54,000 ảnh (baseline).
- `train_v5_weakfix.csv` — **v2**: 121,884 ảnh (31,006 real / 90,878 fake, 42 method, faceswap 4,600).
- `train_v5_weakfix_v3.csv` — **v3**: 129,884 ảnh (faceswap 12,600).
- `val_v5_combined_universal_kaggle_boost.csv` — 6,000 ảnh val.
- `test_balanced_fixed_zero_leakage.csv` — test benchmark zero-leakage 2,354 ảnh (1:1 real/fake).
- `v5_weakfix_dataset_summary.json`, `v5_weakfix_v3_dataset_summary.json` — summary, identity_overlap_added=0.
> CSV chỉ chứa **đường dẫn ảnh + label/method/domain/identity** (metadata), không kèm ảnh.
## Kết quả (results/)
Eval theo protocol bf16 (giống v5): acc **baseline 99.41% → v2 99.66% → v3 99.70%**,
faceswap v3 **100% (27/27)**. Gồm eval_*.json/.npz, per_method_*.csv, faceswap_detail.csv,
comparison.json, training_report.
## Checkpoint (checkpoints/)
- `convnext_baseline.pt` — v5-equivalent (3 epoch trên 54K).
- `convnext_weakfix_v2.pt` — method-balanced sampler, init từ baseline.
- `convnext_weakfix_v3.pt` — **final** (faceswap-focused, init từ v2).
Train: `scripts/finetune_convnext_weakfix.py --stage {baseline|v2|v3}` — Eval: `scripts/eval_convnext_weakfix.py`.