train_metadata.json

{
  "design_doc": "notes/02_design_modeling.md",
  "estimator": "DecisionTreeClassifier",
  "model_type": "decision_tree_classifier",
  "trained_at": "2026-05-18T14:31:31.534278",
  "training_seconds": 4.203144073486328,
  "random_state": 42,
  "features": [
    "Culmen Length (mm)",
    "Culmen Depth (mm)",
    "Flipper Length (mm)",
    "Body Mass (g)",
    "Island_Biscoe",
    "Island_Dream",
    "Island_Torgersen",
    "Sex_FEMALE",
    "Sex_MALE",
    "Clutch Completion_No",
    "Clutch Completion_Yes"
  ],
  "target": "Species",
  "n_samples_train": 258,
  "n_features": 11,
  "search_strategy": "GridSearchCV",
  "cv_folds": 5,
  "scoring": "f1_weighted",
  "param_grid": {
    "max_depth": [
      3,
      4,
      5,
      6,
      8,
      10,
      null
    ],
    "min_samples_split": [
      2,
      5,
      10
    ],
    "min_samples_leaf": [
      1,
      2,
      5
    ],
    "criterion": [
      "gini",
      "entropy"
    ]
  },
  "best_params": {
    "criterion": "gini",
    "max_depth": 5,
    "min_samples_leaf": 1,
    "min_samples_split": 5
  },
  "params": {
    "criterion": "gini",
    "max_depth": 5,
    "min_samples_leaf": 1,
    "min_samples_split": 5
  },
  "best_cv_score": 0.973031605176191,
  "best_cv_score_std": 0.019704745060290966,
  "best_fold_scores": [
    0.9808021038790269,
    0.9615384615384616,
    0.9807921654969955,
    0.9420252949664715,
    1.0
  ],
  "best_train_score_mean": 0.9932328656107854,
  "model_path": "models/model.joblib",
  "tree_depth": 5,
  "tree_n_leaves": 10
}