{
  "READY": true,
  "name": "metabric_grade",
  "task": "classification",
  "num_classes": 3,
  "cat_idx": [],
  "num_samples": 1892,
  "num_features": 20603,
  "imbalance_ratio": 5.6331,
  "description": "Three-class histological grade (1, 2, 3) from primary breast-tumour gene expression in METABRIC: 1,892 distinct patients and 20,603 released expression measurements. Exclude 88 expression-profiled patients without a recorded grade. Use only the supplied log2 microarray intensities, preserving 13 missing cells for training-fitted imputation. Clinical annotations and patient/sample IDs are not features. This is a retrospective tumour molecular/pathology task. Preserve source feature-row identity even when gene annotations repeat. Use a patient-disjoint, grade-stratified 70/15/15 split (1,324/284/284); fit any additional preprocessing only on training rows.",
  "source": "METABRIC / cBioPortal (Curtis et al., 2012)",
  "license": "ODbL-1.0",
  "url": "https://github.com/cBioPortal/datahub/tree/86690e1ed9752b1dcd50b5657f5f05eafa4b6b78/public/brca_metabric",
  "split_strategy": "fixed",
  "label": "transcriptomics",
  "target_mapping": {
    "0": "grade 1",
    "1": "grade 2",
    "2": "grade 3"
  },
  "source_url": "https://github.com/cBioPortal/datahub/tree/86690e1ed9752b1dcd50b5657f5f05eafa4b6b78/public/brca_metabric",
  "publication_doi": "10.1038/nature10983",
  "outer_split_protocol": "patient_stratified_70_15_15_v1",
  "sample_metadata_file": "sample_metadata.csv",
  "source_manifest_sha256": "14d221dacc5ab2d163a0e45c00de2407be31d4d8698c0bf537b4d7f008720d3d",
  "curation_protocol": "metabric_clinical_grade_expression_v1",
  "source_num_samples": 1980,
  "feature_metadata_file": "feature_metadata.csv",
  "target_definition": "Released clinical GRADE (1, 2, 3); labels encoded as 0, 1, 2",
  "source_revision": "86690e1ed9752b1dcd50b5657f5f05eafa4b6b78",
  "source_num_features": 20603,
  "feature_representation": "source_log2_microarray_intensity",
  "license_url": "https://opendatacommons.org/licenses/odbl/1-0/",
  "source_licenses": [
    {
      "id": "metabric",
      "title": "METABRIC expression and clinical data, pinned cBioPortal release",
      "url": "https://github.com/cBioPortal/datahub/tree/86690e1ed9752b1dcd50b5657f5f05eafa4b6b78/public/brca_metabric",
      "license": "ODbL-1.0",
      "license_url": "https://opendatacommons.org/licenses/odbl/1-0/",
      "terms_url": null
    }
  ]
}