{
  "phase": "phase2",
  "best_existing_run": "p2c_resnet18_facecrop",
  "best_existing_auc": 0.9755,
  "decisions": [
    {
      "choice": "input size",
      "decision": "224x224",
      "evidence": "ResNet18 improves from 0.9366 to 0.9660 AUC.",
      "confidence": "high"
    },
    {
      "choice": "face crop",
      "decision": "enable",
      "evidence": "Best run is p2c_resnet18_facecrop with AUC 0.9755.",
      "confidence": "medium-high"
    },
    {
      "choice": "augmentation",
      "decision": "disable for current 20% setting",
      "evidence": "p2e_resnet18_facecrop_aug is 0.9737, below facecrop-only 0.9755; SimpleCNN drops sharply.",
      "confidence": "low"
    },
    {
      "choice": "normalization",
      "decision": "ImageNet/default",
      "evidence": "real_norm is only +0.0018 and is less aligned with pretrained weights.",
      "confidence": "medium"
    },
    {
      "choice": "source generalization",
      "decision": "report as limitation and diagnostic target",
      "evidence": "Holdout text2img and insight pairwise AUC drop to 0.7595 and 0.8421.",
      "confidence": "high"
    }
  ],
  "note": "Generated by 04_phase2_analysis.ipynb when this cell is executed."
}