models/bundle.json

{
  "backbone": "Perch 2.0 (Google) via justinchuby/Perch-onnx",
  "backbone_licence": "Apache-2.0",
  "backbone_file": "perch_v2_no_dft.onnx",
  "input": {
    "sample_rate_hz": 32000,
    "window_sec": 5.0,
    "hop_sec": 2.5,
    "feature": "Perch embedding, 1536-d, L2-normalised per clip"
  },
  "species_head": "linear-cosine",
  "n_classes": 93,
  "n_training_clips": 16591,
  "n_frozen_held_out": 65,
  "class_weight_alpha": 1.0,
  "metrics": {
    "linear-cosine": 0.8457536916387927,
    "linear": 0.7683880201718031,
    "mlp1": 0.7968710474781021,
    "mlp2": 0.7818056113964551
  },
  "binary_head_auc": {
    "auc_mean": 0.946195485178178,
    "auc_std": 0.0017283837268795396,
    "folds": [
      0.9486,
      0.9455,
      0.9445
    ]
  }
}