{
  "app": "ST_Log_RHOB",
  "model_file": "rhob_model.joblib",
  "features": [
    "WOB (klbf)",
    "Torque (kft.lbf)",
    "SPP (psi)",
    "RPM (1/min)",
    "ROP (ft/h)",
    "Flow Rate (gpm)"
  ],
  "target": "RHOB",
  "pred_col": "RHOB_Pred",
  "train_ranges": {
    "WOB (klbf)": [
      1.94615700399467,
      24.0511635411013
    ],
    "Torque (kft.lbf)": [
      4.4885630115556,
      10.6601549371402
    ],
    "SPP (psi)": [
      2237.15275329214,
      3008.02927891263
    ],
    "RPM (1/min)": [
      92.4329681966572,
      159.649012940126
    ],
    "ROP (ft/h)": [
      35.2447034559357,
      108.333643237074
    ],
    "Flow Rate (gpm)": [
      641.788449367591,
      852.60489842799
    ]
  },
  "rf_params": {
    "n_estimators": 100,
    "max_depth": 20,
    "max_features": "log2",
    "min_samples_split": 2,
    "min_samples_leaf": 1,
    "bootstrap": true,
    "criterion": "squared_error",
    "random_state": 42,
    "n_jobs": -1
  },
  "metrics": {
    "train": {
      "R": 0.9952351469996485,
      "RMSE": 0.020328718733215245,
      "MAE": 0.01407246467411407,
      "n": 437
    },
    "test": {
      "R": 0.9656119379540025,
      "RMSE": 0.05032971220389197,
      "MAE": 0.03355596261224245,
      "n": 437
    }
  },
  "versions": {
    "numpy": "2.0.2",
    "scikit_learn": "1.6.1"
  },
  "notes": "Units: g/cc. Header aliases applied; features are ordered canonically."
}