Anomaly detection

Details Anomaly detection Anomaly detection

2008-03-18

2008-03-18

McCarthy, Christopher (Department: 2113)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S038110

Reexamination Certificate

active

07346803

ABSTRACT:
A system such as a Web-based system in which a plurality of computers interact with each other is monitored to detect online an anomaly. Transactions of a service provided by each of a plurality of computers to another computer are collected, a matrix of correlations between nodes in the system is calculated from the transactions, and a feature vector representing a node activity balance is obtained from the matrix. The feature vector is monitored using a probability model to detect a transition to an anomalous state.

REFERENCES:
patent: 5661668 (1997-08-01), Yemini et al.
patent: 7107491 (2006-09-01), Graichen et al.
patent: 2004/0221190 (2004-11-01), Roletto et al.
patent: 2007/0100875 (2007-05-01), Chi et al.
Japanese Publication No. 2003-060704 published on Feb. 28, 2003.
Hajji, hassan, “Baselining Network Traffic and Online Faults Detection,” IEEE International Conference on Communications 2003, vol. 1, pp. 301-308.

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