| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a network transaction wrongdoer detecting method for detecting fraudulent evaluation in advance to effectively prevent a fraudulent act performed on the extension. <P>SOLUTION: A method of detecting a wrongdoer in a network system providing a function of electronically performing transaction and a function of performing evaluation by a transactor after transaction, and enabling a user to browse an evaluated result, comprises a divergence value computing process for computing divergence values between actual evaluation point accumulated total values within a latest fixed period and values when the evaluation point accumulated total values change on the average in the meantime, for every evaluated person, a fraudulent evaluation determination process for comparing the divergence values with a predetermined value and determining that there is fraudulent evaluation when the divergence values are the predetermined value or more, and a fraudulent evaluated person extracting process for extracting the evaluated person determined to have fraudulent evaluation, as a candidate of a person evaluated as fraudulent. <P>COPYRIGHT: (C)2008,JPO&INPIT |
