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抄録

At present,a compliance problem tends to be a company crisis, and the unrecognized fraud tends to result inhuge losses. On the other hand, it is difficult for large companies to detect frauds on the contracts because they arecontracted by various person and in various place. Therefore companies need early to introduce a fraud detectionsystem from the transaction history of contracts. We developed the fraud detection model without supervised labelbased on the anomaly detection and succeeded in detecting certified fraud contracts in the top rank.