{
  "format_version": 1,
  "architecture": "SimpleP2G",
  "setting": "single-patch",
  "dataset": "brain",
  "panel": "hmhvg",
  "fold": 0,
  "seed": 42,
  "model_config": {
    "decoder_depth": 12,
    "num_genes": 200,
    "hidden_size": 384,
    "cond_size": 2560,
    "num_cond_tokens": 4,
    "num_heads": 6,
    "loss_name": "gaussian_nll",
    "dropout": 0.05
  },
  "input": {
    "representation": "frozen Virchow2 CLS token concatenated with mean patch tokens",
    "embedding_dimension": 2560,
    "image_encoder_weights_included": false
  },
  "output": {
    "num_genes": 200,
    "gene_order": "genes.json",
    "expression_scale": "log2(raw_count + 1)",
    "returns": [
      "expression_mean",
      "log_variance"
    ]
  },
  "checkpoint": {
    "epoch": 12,
    "weights": "ema",
    "selection": "highest validation-slide PCC-200; earliest epoch breaks ties"
  },
  "training": {
    "epochs": 100,
    "batch_size": 256,
    "optimizer": {
      "name": "adamw",
      "lr": 5e-05,
      "weight_decay": 0.05,
      "betas": [
        0.9,
        0.999
      ]
    },
    "loss": "gaussian_nll",
    "precision": "fp16",
    "ema_decay": 0.999,
    "sampling": "pooled spots"
  },
  "split": {
    "training_slides": [
      "NCBI658",
      "NCBI659",
      "NCBI660",
      "NCBI661",
      "NCBI662",
      "NCBI663",
      "NCBI664",
      "NCBI665",
      "NCBI666",
      "NCBI668",
      "NCBI669",
      "NCBI670"
    ],
    "validation_slide": "NCBI671",
    "test_slide": "NCBI667"
  },
  "validation_metrics": {
    "PCC10": 0.6837345136688756,
    "PCC50": 0.5748279101783605,
    "PCC200": 0.4576825647353083,
    "MSE": 0.7553753852844238,
    "MAE": 0.6992919445037842
  },
  "test_metrics": {
    "PCC10": 0.5845393964585056,
    "PCC50": 0.5154498406392661,
    "PCC200": 0.3803240847090443,
    "MSE": 0.9970911145210266,
    "MAE": 0.7918735146522522
  }
}