models_metadata.json

{
  "best_model": {
    "name": "Gradient Boosting",
    "type": "MultiOutputRegressor"
  },
  "all_models": {
    "Random Forest": {
      "file_name": "random_forest.pkl",
      "model_type": "MultiOutputRegressor",
      "is_best_model": false
    },
    "Gradient Boosting": {
      "file_name": "gradient_boosting.pkl",
      "model_type": "MultiOutputRegressor",
      "is_best_model": true
    },
    "XGBoost": {
      "file_name": "xgboost.pkl",
      "model_type": "MultiOutputRegressor",
      "is_best_model": false
    },
    "Linear Regression": {
      "file_name": "linear_regression.pkl",
      "model_type": "MultiOutputRegressor",
      "is_best_model": false
    },
    "Ridge Regression": {
      "file_name": "ridge_regression.pkl",
      "model_type": "MultiOutputRegressor",
      "is_best_model": false
    },
    "Lasso Regression": {
      "file_name": "lasso_regression.pkl",
      "model_type": "MultiOutputRegressor",
      "is_best_model": false
    },
    "Support Vector Regression": {
      "file_name": "support_vector_regression.pkl",
      "model_type": "MultiOutputRegressor",
      "is_best_model": false
    },
    "K-Neighbors": {
      "file_name": "k-neighbors.pkl",
      "model_type": "MultiOutputRegressor",
      "is_best_model": false
    },
    "MultiLayer Perceptron": {
      "file_name": "multilayer_perceptron.pkl",
      "model_type": "MultiOutputRegressor",
      "is_best_model": false
    },
    "Extra Trees": {
      "file_name": "extra_trees.pkl",
      "model_type": "MultiOutputRegressor",
      "is_best_model": false
    }
  },
  "feature_columns": [
    "time_min",
    "temperature_c",
    "pressure_atm",
    "ph",
    "sample_encoded",
    "method_encoded"
  ],
  "target_columns": [
    "pectin_yield",
    "galacturonic_acid",
    "molecular_weight",
    "esterification_degree"
  ],
  "timestamp": "2025-11-21T15:09:03.896657",
  "performance_summary": {
    "Random Forest": {
      "average_r2": 0.9259113573589833,
      "average_mae": 978.0065368137342,
      "average_rmse": 1214.2913733491907
    },
    "Gradient Boosting": {
      "average_r2": 0.9427364450625025,
      "average_mae": 868.4402709872938,
      "average_rmse": 1074.2773136179212
    },
    "XGBoost": {
      "average_r2": 0.9202552568919424,
      "average_mae": 1074.230969811392,
      "average_rmse": 1327.1701873750499
    },
    "Linear Regression": {
      "average_r2": 0.6965037781193568,
      "average_mae": 3730.7549786515183,
      "average_rmse": 4818.582238981318
    },
    "Ridge Regression": {
      "average_r2": 0.5552634824964677,
      "average_mae": 3665.3100792936148,
      "average_rmse": 4850.509701616237
    },
    "Lasso Regression": {
      "average_r2": 0.3846292916175258,
      "average_mae": 3702.032509808647,
      "average_rmse": 4828.527973793558
    },
    "Support Vector Regression": {
      "average_r2": 0.48321382880503405,
      "average_mae": 6612.235998243185,
      "average_rmse": 7939.849714629312
    },
    "K-Neighbors": {
      "average_r2": 0.8683507702509604,
      "average_mae": 1287.512615,
      "average_rmse": 2230.119201717444
    },
    "MultiLayer Perceptron": {
      "average_r2": 0.8046401888399946,
      "average_mae": 4253.843137154152,
      "average_rmse": 5488.065210605732
    },
    "Extra Trees": {
      "average_r2": 0.9135049334580244,
      "average_mae": 1060.1740917797918,
      "average_rmse": 1314.6887230153202
    }
  }
}