{
  "model_type": "CatBoostClassifier",
  "trained_at": "2026-03-08T23:22:21.321976+00:00",
  "features": [
    "storage_temperature_c",
    "ph",
    "aw",
    "salt_percent",
    "sugar_percent",
    "fat_percent",
    "initial_inoculum_log_cfu_g",
    "product_category",
    "intended_use",
    "study_type",
    "test_purpose",
    "pathogen",
    "strain_info",
    "inoculation_type",
    "temperature_profile_type",
    "preservative_flag",
    "preservative_type",
    "acidulant_type",
    "packaging_type",
    "oxygen_condition",
    "max_time_days"
  ],
  "categorical_feature_indices": [
    7,
    8,
    9,
    10,
    11,
    12,
    13,
    14,
    16,
    17,
    18,
    19
  ],
  "metrics": {
    "roc_auc": 0.9864,
    "pr_auc": 0.9931,
    "f1": 0.957,
    "confusion_matrix": [
      [
        707,
        110
      ],
      [
        38,
        1645
      ]
    ]
  },
  "dataset_metadata": {
    "dataset_version": "food_micro_challenge_v1",
    "row_count": 100000,
    "column_count": 48,
    "is_synthetic": true,
    "data_source": "synthetic"
  },
  "threshold_cfu_g": 100
}