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Unfraud-api
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{
  "generated_at": "2025-11-20T02:38:35.138608+00:00",
  "dataset_size": 4483956,
  "class_distribution_original": {
    "0": 4439775,
    "1": 44181
  },
  "train_non_frauds_max_used": 400000,
  "train_class_distribution_before_balance": {
    "0": 2663864,
    "1": 26509
  },
  "train_balanced_class_distribution": {
    "0": 400000,
    "1": 26509
  },
  "auc_roc": 0.8857282388447254,
  "threshold": 0.44144144144144143,
  "selection": {
    "mode": "best_f1",
    "best_f1_threshold": 0.44144144144144143,
    "best_f1_value": 0.6439178036627154
  },
  "metrics_at_threshold": {
    "accuracy": 0.9947055727526561,
    "precision": 0.9544241885282347,
    "recall": 0.48585332729741965,
    "f1": 0.6439178041097945
  },
  "feature_importances_xgb_gain_top20": [
    {
      "feature": "qtas_fraudes_cartao",
      "gain": 0.32888033986091614
    },
    {
      "feature": "fraude_ratio_terminal",
      "gain": 0.18363086879253387
    },
    {
      "feature": "fraude_ratio_cartao",
      "gain": 0.10315709561109543
    },
    {
      "feature": "qtas_fraudes_terminal",
      "gain": 0.09818089008331299
    },
    {
      "feature": "entropia_geografica_cartao",
      "gain": 0.0293036587536335
    },
    {
      "feature": "longitude",
      "gain": 0.023642411455512047
    },
    {
      "feature": "latitude",
      "gain": 0.02150840125977993
    },
    {
      "feature": "qtas_transacoes_terminal_dia",
      "gain": 0.02116469480097294
    },
    {
      "feature": "desvio_padrao_valor_cartao",
      "gain": 0.02007487416267395
    },
    {
      "feature": "valor_medio_cartao",
      "gain": 0.019987693056464195
    },
    {
      "feature": "desvio_padrao_valor_terminal",
      "gain": 0.019812680780887604
    },
    {
      "feature": "tx_amount",
      "gain": 0.019712846726179123
    },
    {
      "feature": "velocidade_ultima_transacao",
      "gain": 0.01963718980550766
    },
    {
      "feature": "dias_desde_primeira_transacao_do_cartao",
      "gain": 0.01920768804848194
    },
    {
      "feature": "valor_medio_terminal",
      "gain": 0.01920476369559765
    },
    {
      "feature": "dias_desde_inicio_terminal",
      "gain": 0.018486132845282555
    },
    {
      "feature": "tx_hour",
      "gain": 0.01793355494737625
    },
    {
      "feature": "qtas_transacoes_cartao_dia",
      "gain": 0.01647430658340454
    }
  ],
  "base_model_meta_weights": {
    "rf": 0.9984035731210663,
    "xgb": 0.001111504578919198,
    "et": 0.000484922300014473
  },
  "base_model_auc_test": {
    "rf": 0.881155250373531,
    "xgb": 0.8867136661938362,
    "et": 0.8830867877996174
  },
  "model_path": "./models\\stacking_fraude_model_4.pkl",
  "calibrated_saved": true
}