| 摘要 |
PROBLEM TO BE SOLVED: To reduce omissions of related events while preventing unrelated events from being collected into the same cluster as the related events, in an event clustering system. SOLUTION: Distances between a plurality of events are calculated by parameters and a predetermined weight (1010). A plurality of events between which the distances are shorter than a predetermined numerical value are collected as one cluster and are saved (1020). A parameter distribution in events within the cluster and parameter distribution in all events are calculated (1040 and 1050) and compared with each other (1060), and a parameter of which the difference in distribution is larger is extracted (1070). A characteristic area among the events in the cluster about the parameter is specified, and events fitting the area are selected from among the events in the cluster and the events which are not saved (1080). A weight in the distance calculation is made lighter as the number of events selected from the cluster about parameters other than the parameter becomes larger (1090). COPYRIGHT: (C)2011,JPO&INPIT
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