OPTIMIZATION OF FRAUD DETECTION STRATEGIES

摘要

A computer-implemented fraud detection system comprises a processor and memory storing computer-readable instructions for causing a computer to perform a method for determining potentially fraudulent records. The method performed by the computer comprises executing a trial fraud detection strategy routine on historic records in a database, the trial detection strategy comprising multiple rules including at least one weighting factor. The method further includes calculating an efficiency of the trial fraud detection strategy based on the multiple rules and executing an iterative routine to optimize adjusting the at least one weighting factor. An adjusted fraud detection strategy that incorporates the adjusted weighting factor is set.

主权项

1. A computer-implemented fraud detection method for determining potentially fraudulent records in a database, comprising:
executing a trial fraud detection strategy routine on historic records in the database; the trial detection strategy comprising multiple rules; calculating a number of the historic records determined to be proven fraud records according to the trial fraud detection strategy; calculating a number of the historic records determined to be false positive records according to the trial fraud detection strategy; calculating a trial efficiency of the trial fraud detection strategy based on a difference between a number of determined proven fraud records multiplied by a profit factor for each proven fraud record and a number of determined false positive records multiplied by a cost factor for each false positive record; and determining an adjusted fraud detection strategy with an efficiency that equals or exceeds the trial efficiency.