{
    "timestamp": "2026-01-08 17:59:10",
    "model_name": "Random Forest",
    "num_features": 30,
    "total_features_available": 49,
    "training_samples": 356,
    "test_samples": 89,
    "test_mae": 2.959679790870802,
    "test_mse": 22.52809628510788,
    "test_rmse": 4.74637717476265,
    "test_r2": 0.4146924609040473,
    "baseline_val_mae": 3.634581261520732,
    "improvement_vs_baseline": 0.6749014706499299,
    "improvement_pct": 18.568892042533307,
    "k_fold_cv": "Completed (5-fold)",
    "feature_selection_methods": [
        "Random Forest",
        "Mutual Information",
        "Correlation"
    ],
    "selected_features": [
        "dien_tich_phong",
        "tasks_per_hour",
        "num_trash_collection_tasks",
        "num_surgery_room_tasks",
        "dien_tich_hanh_lang",
        "area_diversity",
        "num_lobby_tasks",
        "hour_end",
        "dien_tich_ngoai_canh",
        "monitoring_ratio",
        "num_patient_room_tasks",
        "num_monitoring_tasks",
        "tasks_per_floor",
        "work_hours_numeric",
        "trash_collection_ratio",
        "dien_tich_tham",
        "so_tang",
        "so_ca_cua_toa",
        "dien_tich_wc",
        "num_wc_tasks",
        "dien_tich_kinh",
        "num_elevator_tasks",
        "num_office_tasks",
        "hour_start",
        "cleaning_ratio",
        "num_technical_room_tasks",
        "ranh_thoat_nuoc",
        "num_room_cleaning_tasks",
        "num_deep_cleaning_tasks",
        "num_tasks"
    ],
    "cols_to_scale": [
        "so_ca_cua_toa",
        "num_tasks",
        "num_cleaning_tasks",
        "num_trash_collection_tasks",
        "num_monitoring_tasks",
        "num_room_cleaning_tasks",
        "num_deep_cleaning_tasks",
        "num_maintenance_tasks",
        "num_support_tasks",
        "num_other_tasks",
        "num_wc_tasks",
        "num_hallway_tasks",
        "num_lobby_tasks",
        "num_patient_room_tasks",
        "num_clinic_room_tasks",
        "num_surgery_room_tasks",
        "num_outdoor_tasks",
        "num_elevator_tasks",
        "num_office_tasks",
        "num_technical_room_tasks",
        "cleaning_ratio",
        "trash_collection_ratio",
        "monitoring_ratio",
        "room_cleaning_ratio",
        "area_diversity",
        "task_complexity_score",
        "so_tang",
        "so_cua_thang_may",
        "dien_tich_ngoai_canh",
        "dien_tich_sanh",
        "dien_tich_hanh_lang",
        "dien_tich_wc",
        "dien_tich_phong",
        "dien_tich_tham",
        "doc_ham",
        "vien_phan_quang",
        "op_tuong",
        "op_chan_tuong",
        "ranh_thoat_nuoc",
        "dien_tich_kinh",
        "hour_start",
        "hour_end",
        "work_hours_numeric",
        "tasks_per_hour",
        "tasks_per_floor",
        "wc_per_floor",
        "cleaning_workload",
        "total_area",
        "area_per_floor"
    ]
}