{
  "base_model": "vit_small_patch14_dinov2.lvd142m",
  "hf_base_model": "facebook/dinov2-small",
  "num_classes": 2,
  "class_names": [
    "not_pneumonia",
    "pneumonia"
  ],
  "input_size": 224,
  "in_chans": 1,
  "batch_size": 64,
  "phase1_linear_probe": {
    "epochs": 4,
    "lr": 0.001
  },
  "phase2_partial_unfreeze": {
    "epochs": 4,
    "lr": 1e-05,
    "unfrozen_blocks": "last 2"
  },
  "seed": 42,
  "dicom_preprocessing": {
    "windowing": "honour DICOM WindowCenter/WindowWidth, fallback to min-max",
    "polarity": "invert MONOCHROME1",
    "resample": "bilinear, antialiased",
    "target_size": 224,
    "channels": 1
  },
  "data_split": {
    "stratified_by": "Target (binary pneumonia label, per-patient max)",
    "test_size": 0.2,
    "random_state": 42,
    "note": "random_state alone is NOT invariant across sklearn versions; val_indices.json is the canonical reference for the exact validation set used."
  },
  "val_indices_sha256": "d69d9f653e547e58ec9ebe8a46e51573e8ffa608e0ed08987ad14f57f28a4f5d",
  "limit_patients": 0
}