摘要 |
<P>PROBLEM TO BE SOLVED: To verify, in real time, effectiveness of a failure cause determination rule used in a failure cause analysis system. <P>SOLUTION: A time window for giving a time interval for examining the failure cause determination rule is automatically set. A temporary failure classification tree is generated based on an event having occurred in the latest time window. Then the generated temporary failure classification tree and a failure classification tree (registered failure classification tree) of the failure cause determination rule are compared, and the failure cause determination rule used in the operation is updated based on the comparison result. <P>COPYRIGHT: (C)2012,JPO&INPIT |