trained/metadata.json

{
  "models": {
    "cache_advisor": {
      "type": "RandomForestClassifier",
      "task": "classification",
      "classes": [
        "high",
        "low",
        "medium"
      ],
      "accuracy_cv5": 1.0
    },
    "ttl_recommender": {
      "type": "GradientBoostingRegressor",
      "task": "regression",
      "unit": "seconds",
      "mae": 494.56,
      "r2": 0.8994
    },
    "complexity_estimator": {
      "type": "GradientBoostingRegressor",
      "task": "regression",
      "unit": "score (1-100)",
      "mae": 5.57,
      "r2": 0.9216
    }
  },
  "features": [
    "query_length",
    "query_type",
    "num_tables",
    "num_joins",
    "num_conditions",
    "num_aggregates",
    "num_subqueries",
    "num_columns",
    "has_distinct",
    "has_order_by",
    "has_group_by",
    "has_having",
    "has_limit",
    "has_offset",
    "has_where",
    "has_like",
    "has_in_clause",
    "has_between",
    "has_exists",
    "has_window_func",
    "has_cte",
    "has_union",
    "has_case",
    "has_cast",
    "nesting_depth",
    "num_and_or",
    "num_string_literals",
    "num_numeric_literals"
  ],
  "n_features": 28,
  "training_samples": 8000,
  "test_samples": 1600
}