{
  "READY": true,
  "name": "VitalDB",
  "task": "binary",
  "num_classes": 2,
  "cat_idx": [
    37,
    38,
    39,
    40,
    41,
    42,
    43,
    44,
    45,
    46,
    47,
    48,
    49,
    50,
    51,
    52,
    54,
    7,
    53,
    6,
    5
  ],
  "num_samples": 6388,
  "num_features": 57,
  "imbalance_ratio": 111.0702,
  "description": "VitalDB perioperative in-hospital mortality classification using 57 features available by the end of the operative/anesthesia case. ICU stay, hospital length of stay, admission/discharge timestamps and patient/case identifiers are excluded from X. Device/procedure indicators, grouped diagnoses and perioperative durations are retained; two invalid anesthesia durations are missing. ASA and laboratory missingness are preserved for training-fitted imputation. The stored patient-grouped, outcome-stratified fixed split is unchanged: 4,442/978/968 training/validation/test cases, containing 41/9/7 mortality-positive cases (57 cases from 48 patients). The small event counts limit validation and test precision.",
  "source": "VitalDB",
  "label": "clinical & healthcare",
  "prediction_time": "end_of_operative_anesthesia_case",
  "curation_protocol": "vitaldb_end_of_case_v1",
  "source_manifest_sha256": "34bbb229ad672b5e694bab3636a006ea4fb1c0bbdd445fb92aaaa146867255b6",
  "url": "https://physionet.org/content/vitaldb/1.0.0/",
  "source_url": "https://physionet.org/content/vitaldb/1.0.0/",
  "license": "CC-BY-4.0",
  "target_mapping": {
    "0": "no in-hospital death",
    "1": "in-hospital death"
  },
  "split_strategy": "fixed",
  "split_group": "patient",
  "sample_metadata_file": "sample_metadata.csv"
}