{ "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 }