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amount conditioning 1class weighting 1credit card fraud detection 1dollar-based evaluation 1temporal audit 1xgboost 1

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cs.CE2026

Class Weighting versus Amount Conditioning in Credit-Card Fraud Detection: A Dollar-Metric Study with a Temporal Explanation Audit

Chenyu Wu

The paper studies whether incorporating transaction amounts as sample weights or as an alert‑ordering factor improves credit‑card fraud detection, comparing class weighting and amo…