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#Fraud Detection

1 posts tagged "fraud detection"

AI System on Native AWS - Part 8 - 即時串流 ML 與詐欺偵測

詐欺偵測是即時 ML 的極限測試:要在幾十毫秒內對每筆交易做出放行或攔截的決定,特徵要用『此刻及過去幾秒』的行為即時算出,對手還會主動規避你的規則。本篇用純 AWS 原生服務打造即時串流風控:Kinesis 收交易流、Managed Service for Apache Flink 做串流特徵、SageMaker/Fraud Detector 毫秒級評分、Neptune 圖資料庫抓詐欺團夥、DynamoDB 當線上特徵與決策存放,全部用 CDK(CloudFormation)描述,深入談串流特徵一致性、時間窗、圖偵測與規則+ML 混合決策。

Jul 25, 2026 ·27 min aiengineering

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