{
  "schema_version": "1.0",
  "created_at": "2026-02-11T17:36:27.753116",
  "models": {
    "dl_multihead": [
      {
        "version": "20260210_182731",
        "filename": "resnet50_efnb7_multihead_20260210_182731_best.pth",
        "model_type": "dl_multihead",
        "model_class": "CardAuthModel",
        "backbone": "resnet50+efficientnet_b7",
        "status": "training",
        "accuracy": 0.967741935483871,
        "f1_score": 0.9523809523809523,
        "roc_auc": 1.0,
        "n_features": "end-to-end",
        "dataset_size": 204,
        "total_params": 94246422,
        "trainable_params": 94246422,
        "best_epoch": 2,
        "pipeline_type": "dl",
        "trained_at": "2026-02-10T19:01:22.939571"
      },
      {
        "version": "20260211_155409",
        "filename": "cardauth_multihead_20260211_155409_best.pth",
        "model_type": "dl_multihead",
        "model_class": "CardAuthModel",
        "backbone": "resnet50+efficientnet_b7",
        "status": "retired",
        "accuracy": 0.7741935483870968,
        "f1_score": 0.631578947368421,
        "roc_auc": 0.6333333333333333,
        "n_features": "end-to-end",
        "dataset_size": 204,
        "total_params": 95402258,
        "trainable_params": 95402258,
        "best_epoch": 53,
        "svdd_threshold": 0.9207070707070707,
        "back_threshold": 0.45545454545454545,
        "pipeline_type": "dl",
        "trained_at": "2026-02-11T17:36:27.753116",
        "promoted_at": "2026-02-11T17:40:00.000000"
      },
      {
        "version": "20260214_200541",
        "filename": "cardauth_multihead_20260214_200541_best.pth",
        "model_type": "multi_head",
        "backbone": "resnet50+efficientnet_b7",
        "status": "training",
        "accuracy": 0.8743651430098904,
        "f1_score": 0.9192994505494505,
        "roc_auc": 0.8970144941172506,
        "n_features": "end-to-end",
        "dataset_size": 18924,
        "total_params": 95402258,
        "trainable_params": 81637498,
        "best_epoch": 2,
        "svdd_threshold": 0.7524242424242424,
        "back_threshold": 0.6534343434343434,
        "trained_at": "2026-02-15T07:30:42.692244"
      },
      {
        "version": "20260216_091800",
        "filename": "cardauth_multihead_20260216_091800_best.pth",
        "model_type": "multi_head",
        "backbone": "resnet50+efficientnet_b7",
        "status": "production",
        "accuracy": 1.0,
        "f1_score": 1.0,
        "roc_auc": 1.0,
        "n_features": "end-to-end",
        "dataset_size": 19113,
        "total_params": 95402258,
        "trainable_params": 81637498,
        "best_epoch": 26,
        "svdd_threshold": 0.08919191919191918,
        "back_threshold": 0.0198989898989899,
        "pipeline_type": "dl",
        "trained_at": "2026-02-17T15:15:06.491447",
        "promoted_at": "2026-02-18T00:00:00.000000"
      },
      {
        "version": "20260304_010835",
        "filename": "cardauth_multihead_20260304_010835_best.pth",
        "model_type": "multi_head",
        "backbone": "resnet50+efficientnet_b7",
        "status": "training",
        "accuracy": 0.9995604395604396,
        "f1_score": 0.999713055954089,
        "roc_auc": 0.999998922977837,
        "n_features": "end-to-end",
        "dataset_size": 22853,
        "total_params": 95402258,
        "trainable_params": 81637498,
        "best_epoch": 9,
        "svdd_threshold": 0.31686868686868686,
        "back_threshold": 0.97,
        "trained_at": "2026-03-04T23:51:04.456575"
      },
      {
        "version": "20260305_100403",
        "filename": "cardauth_multihead_20260305_100403_best.pth",
        "model_type": "multi_head",
        "backbone": "resnet50+efficientnet_b7",
        "status": "training",
        "accuracy": 0.9986813186813187,
        "f1_score": 0.9991396616002294,
        "roc_auc": 1.0,
        "n_features": "end-to-end",
        "dataset_size": 22931,
        "total_params": 95402258,
        "trainable_params": 81637498,
        "best_epoch": 5,
        "svdd_threshold": 0.594040404040404,
        "back_threshold": 0.52,
        "trained_at": "2026-03-05T14:48:23.748060"
      },
      {
        "version": "20260305_232239",
        "filename": "cardauth_multihead_20260305_232239_best.pth",
        "model_type": "multi_head",
        "backbone": "resnet50+efficientnet_b7",
        "status": "production",
        "accuracy": 1.0,
        "f1_score": 1.0,
        "roc_auc": 1.0,
        "n_features": "end-to-end",
        "dataset_size": 22931,
        "total_params": 95402258,
        "trainable_params": 81637498,
        "best_epoch": 21,
        "svdd_threshold": 0.406,
        "back_threshold": 0.35,
        "trained_at": "2026-03-07T07:38:00.529602"
      }
    ]
  },
  "production_model": "20260216_091800",
  "staging_model": "20260210_182731"
}