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{
  "features": [
    "hour_of_day",
    "day_of_week",
    "hour_sin",
    "hour_cos",
    "is_weekend",
    "is_night",
    "battery_level",
    "is_charging",
    "battery_change_rate",
    "screen_on",
    "screen_on_duration_30min",
    "app_opens_last_hour",
    "session_length_current",
    "time_since_last_interaction",
    "notif_shown_last_30min",
    "notif_clicked_last_30min",
    "notif_dismissed_last_30min",
    "notif_ignored_last_30min",
    "notif_shown_last_24h",
    "notif_ctr_last_7d",
    "recent_notification_density"
  ],
  "target": "bad_timing",
  "best_params": {
    "n_estimators": 500,
    "learning_rate": 0.05,
    "max_depth": 4,
    "num_leaves": 63,
    "min_child_samples": 50,
    "subsample": 0.8,
    "colsample_bytree": 0.8,
    "reg_alpha": 0,
    "reg_lambda": 1.0,
    "scale_pos_weight": 0.9037776387717913,
    "random_state": 42
  },
  "metrics": {
    "roc_auc": 0.8337733629294475,
    "pr_auc": 0.8524595995659757,
    "brier_score": 0.16567988798337643,
    "accuracy": 0.7582666666666666,
    "f1": 0.7765865680837954,
    "ensemble_roc_auc": 0.8343689574320163,
    "ensemble_pr_auc": 0.8595451820556155
  },
  "n_ensemble_models": 5,
  "sklearn_version": "1.8.0",
  "lightgbm_version": "4.6.0"
}