{
  "acquisition": {
    "acquired_at": "2026-06-27T23:51:56+00:00",
    "agent_id": "Claude-extra",
    "dedupe_fingerprint": "1de7ea70901973e79eccdef1f2cc10110c20432a",
    "source_dataset_id": "admiral/admiral_adsl",
    "source_dataset_name": "Subject Level Analysis Dataset",
    "source_platform": "rdatasets",
    "source_rows": 306,
    "source_target_column_original": "SUBJID",
    "source_url": "https://vincentarelbundock.github.io/Rdatasets/csv/admiral/admiral_adsl.csv",
    "staged_rows": 306,
    "staging_path": "/home/ubuntu/hyper/data/tabular/real_regression_sources/rdatasets-admiral-admiral-adsl-subjid.csv",
    "tool": "models.tools.acquire_regression_extra_sources"
  },
  "counts": {
    "dropped_feature_count": 0,
    "n_features": 18,
    "original_columns": 19,
    "original_rows": 306,
    "rows_after_target_cleanup": 306,
    "selected_rows": 306,
    "strata_count": 121,
    "test_rows": 51,
    "train_rows": 255
  },
  "created_at": "2026-06-27T23:51:56+00:00",
  "dataset_hash": "d2daf53412ab18dc",
  "dedupe_fingerprint": "1de7ea70901973e79eccdef1f2cc10110c20432a",
  "dropped_feature_columns": [],
  "feature_columns": [
    "SITEID",
    "AGE",
    "SEX",
    "RACE",
    "ETHNIC",
    "ARMCD",
    "ARM",
    "ACTARMCD",
    "ACTARM",
    "DMDY",
    "TRT01P",
    "TRT01A",
    "TRTDURD",
    "EOSSTT",
    "DTHADY",
    "LDDTHELD",
    "RACEGR1",
    "AGEGR1"
  ],
  "feature_encodings": {
    "ACTARM": {
      "impute_value": 2.0,
      "kind": "numeric"
    },
    "ACTARMCD": {
      "impute_value": 2.0,
      "kind": "numeric"
    },
    "AGE": {
      "impute_value": 77.0,
      "kind": "numeric"
    },
    "AGEGR1": {
      "impute_value": 1.0,
      "kind": "numeric"
    },
    "ARM": {
      "impute_value": 2.0,
      "kind": "numeric"
    },
    "ARMCD": {
      "impute_value": 2.0,
      "kind": "numeric"
    },
    "DMDY": {
      "impute_value": -10.0,
      "kind": "numeric"
    },
    "DTHADY": {
      "impute_value": 3.0,
      "kind": "categorical_codes",
      "mapping": {
        "12.0": 0,
        "175.0": 1,
        "61.0": 2,
        "__MISSING__": 3
      }
    },
    "EOSSTT": {
      "impute_value": 1.0,
      "kind": "numeric"
    },
    "ETHNIC": {
      "impute_value": 1.0,
      "kind": "numeric"
    },
    "LDDTHELD": {
      "impute_value": 3.0,
      "kind": "categorical_codes",
      "mapping": {
        "0.0": 0,
        "1.0": 1,
        "2.0": 2,
        "__MISSING__": 3
      }
    },
    "RACE": {
      "impute_value": 3.0,
      "kind": "numeric"
    },
    "RACEGR1": {
      "impute_value": 1.0,
      "kind": "numeric"
    },
    "SEX": {
      "impute_value": 0.0,
      "kind": "numeric"
    },
    "SITEID": {
      "impute_value": 708.0,
      "kind": "numeric"
    },
    "TRT01A": {
      "impute_value": 2.0,
      "kind": "numeric"
    },
    "TRT01P": {
      "impute_value": 2.0,
      "kind": "numeric"
    },
    "TRTDURD": {
      "impute_value": 132.0,
      "kind": "numeric"
    }
  },
  "feature_scaling": {
    "constant_columns": [],
    "max": [
      718.0,
      89.0,
      1.0,
      3.0,
      1.0,
      3.0,
      3.0,
      3.0,
      3.0,
      -2.0,
      3.0,
      3.0,
      212.0,
      1.0,
      3.0,
      3.0,
      1.0,
      1.0
    ],
    "method": "minmax over cleaned source rows before sampling",
    "min": [
      701.0,
      50.0,
      0.0,
      0.0,
      0.0,
      0.0,
      0.0,
      0.0,
      0.0,
      -37.0,
      0.0,
      0.0,
      1.0,
      0.0,
      0.0,
      0.0,
      0.0,
      0.0
    ],
    "range": [
      0.0,
      1.0
    ]
  },
  "hash_algorithm": "sha256:first16",
  "headers_removed_from_csv": true,
  "n_features": 18,
  "origin": "real",
  "original_headers": [
    "SITEID",
    "AGE",
    "SEX",
    "RACE",
    "ETHNIC",
    "ARMCD",
    "ARM",
    "ACTARMCD",
    "ACTARM",
    "DMDY",
    "TRT01P",
    "TRT01A",
    "TRTDURD",
    "EOSSTT",
    "DTHADY",
    "LDDTHELD",
    "RACEGR1",
    "AGEGR1",
    "target"
  ],
  "output_headers": [
    "SITEID",
    "AGE",
    "SEX",
    "RACE",
    "ETHNIC",
    "ARMCD",
    "ARM",
    "ACTARMCD",
    "ACTARM",
    "DMDY",
    "TRT01P",
    "TRT01A",
    "TRTDURD",
    "EOSSTT",
    "DTHADY",
    "LDDTHELD",
    "RACEGR1",
    "AGEGR1",
    "target"
  ],
  "retrieved_at": "2026-06-27T23:51:55+00:00",
  "sampling": {
    "final_max_rows": 2000,
    "method": "quota stratified by target distribution plus high-variance feature quantile bins",
    "minimum_final_rows": 101,
    "minimum_test_to_train_ratio_when_small": 0.2,
    "seed": 3555709497,
    "source_read_max_rows": null,
    "test_target_rows": 1000,
    "train_target_rows": 1000
  },
  "sha256": "d2daf53412ab18dc7c7be3259d4350ef45f5cbccc61ecd87c82df89d6331f033",
  "source_dataset_id": "admiral/admiral_adsl",
  "source_dataset_name": "Subject Level Analysis Dataset",
  "source_family": "subject-level",
  "source_file": "rdatasets-admiral-admiral-adsl-subjid.csv",
  "source_license": "GPL (R package admiral)",
  "source_modified_at": "2026-06-27T23:51:56+00:00",
  "source_path": "/home/ubuntu/hyper/data/tabular/real_regression_sources/rdatasets-admiral-admiral-adsl-subjid.csv",
  "source_platform": "rdatasets",
  "source_real_data": true,
  "source_resource_id": null,
  "source_rows": 306,
  "source_size_bytes": 23694,
  "source_target_column_original": "SUBJID",
  "source_url": "https://vincentarelbundock.github.io/Rdatasets/csv/admiral/admiral_adsl.csv",
  "staged_rows": 306,
  "staging_path": "/home/ubuntu/hyper/data/tabular/real_regression_sources/rdatasets-admiral-admiral-adsl-subjid.csv",
  "target_column": "target",
  "target_generation": "original_numeric_column",
  "target_is_final_column": true,
  "target_names": [
    "target"
  ],
  "target_scaling": {
    "max": 1448.0,
    "min": 1001.0,
    "mode": "regression",
    "range": [
      0.0,
      1.0
    ]
  },
  "target_source_encoding": {
    "kind": "numeric"
  },
  "task_type": "regression",
  "test_rows": 51,
  "train_rows": 255
}