fraud-detection-lightgbm-v1 / model_metadata_lgbm.json
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{
"model_type": "lightgbm",
"model_version": "2.0.0",
"created_at": "2025-11-28T13:56:53.515388",
"framework": "lightgbm",
"framework_version": "4.6.0",
"feature_count": 30,
"features": [
"Time",
"V1",
"V2",
"V3",
"V4",
"V5",
"V6",
"V7",
"V8",
"V9",
"V10",
"V11",
"V12",
"V13",
"V14",
"V15",
"V16",
"V17",
"V18",
"V19",
"V20",
"V21",
"V22",
"V23",
"V24",
"V25",
"V26",
"V27",
"V28",
"Amount"
],
"best_iteration": 14,
"performance": {
"accuracy": 0.9814964362206383,
"precision": 0.07773851590106007,
"recall": 0.8979591836734694,
"f1_score": 0.14308943089430895,
"auc": 0.9328978988894376
},
"confusion_matrix": {
"tn": 55820,
"fp": 1044,
"fn": 10,
"tp": 88
},
"training_data": {
"total_samples": 227845,
"fraud_samples": 394,
"normal_samples": 227451
},
"test_data": {
"total_samples": 56962,
"fraud_samples": 98,
"normal_samples": 56864
},
"feature_importance": [
{
"feature": "V4",
"importance": 11663578000233.742
},
{
"feature": "V14",
"importance": 327418449946.40283
},
{
"feature": "V12",
"importance": 154682376794.20117
},
{
"feature": "V10",
"importance": 3429060827.7998047
},
{
"feature": "Amount",
"importance": 1113666481.6015625
},
{
"feature": "V13",
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},
{
"feature": "V5",
"importance": 614770505.7314453
},
{
"feature": "V26",
"importance": 471462682.1035156
},
{
"feature": "V27",
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},
{
"feature": "V1",
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},
{
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{
"feature": "V9",
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{
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{
"feature": "V21",
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},
{
"feature": "V11",
"importance": 276044022.5
}
]
}