发明名称 |
Anomaly detection based on directional data |
摘要 |
Properly detects an anomaly on the basis of directional data that are obtained in sequence from a monitored object. An anomaly detecting method includes: sequentially generating directional data indicating a feature of each piece of monitored data correspondingly to the monitored data which are input in sequence; calculating the dissimilarity of the directional data to a reference vector; updating a moment of the distribution of the dissimilarity appearing when the directional data is modeled with a multi-dimensional probability distribution, based on the moment already corresponding to the monitored data; calculating a parameter determining the variance of the multi-dimensional probability distribution, on the basis of the moment; calculating a threshold of the dissimilarity on the basis of the multi-dimensional probability distribution the variance of which is determined by the parameter; and detecting an anomaly in the monitored data that corresponds to the dissimilarity if the dissimilarity exceeds the threshold. |
申请公布号 |
US8640015(B2) |
申请公布日期 |
2014.01.28 |
申请号 |
US20080145067 |
申请日期 |
2008.06.24 |
申请人 |
IDE TSUYOSHI;INOUE KEISUKE;YAMANE TOSHIYUKI;TAKEUCHI HIRONORI;INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
IDE TSUYOSHI;INOUE KEISUKE;YAMANE TOSHIYUKI;TAKEUCHI HIRONORI |
分类号 |
G06F11/00 |
主分类号 |
G06F11/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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