{
  "dataset_name": "ov",
  "download_urls": {
    "OV_mRNA": "https://huggingface.co/datasets/AIBIC/MLOmics/resolve/main/Main_Dataset/Classification_datasets/GS-OV/Original/OV_mRNA.csv",
    "OV_label_num": "https://huggingface.co/datasets/AIBIC/MLOmics/resolve/main/Main_Dataset/Classification_datasets/GS-OV/Original/OV_label_num.csv"
  },
  "download_timestamp": "2026-06-01T13:48:09.093293",
  "statistics": {
    "num_samples": 284,
    "num_features": 14229,
    "target_stats": {
      "class_mapping": {
        "Immunoreactive": 0,
        "Mesenchymal": 1,
        "Proliferative": 2,
        "Differentiated": 3
      },
      "num_classes": 4,
      "class_names": [
        "Immunoreactive",
        "Mesenchymal",
        "Proliferative",
        "Differentiated"
      ],
      "samples_per_class": {
        "Immunoreactive": 64,
        "Mesenchymal": 79,
        "Proliferative": 67,
        "Differentiated": 74
      }
    }
  },
  "preprocessing_notes": "MLOmics log-transformed FPKM values (no additional log transform). Dropped genes with >50% zero values in a random 70% training split. Duplicate gene symbols are dropped keeping first occurrence (1-Mar, 2-Mar). Parquet feature names replace dots with underscores; gene map string_id retains original HGNC symbols."
}