Online Anomaly Detection with an Incremental Centred Kernel Hypersphere

O'Reilly, C., Gluhak, A. and Imran, M. (2013) Online Anomaly Detection with an Incremental Centred Kernel Hypersphere. In: 2013 IEEE International Workshop on Machine Learning for Signal Processing (MLSP), Southampton, UK, 22-25 Sep 2013, ISBN 9781479911806 (doi:10.1109/MLSP.2013.6661900)

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Abstract

Anomaly detection is an important aspect of data analysis. Kernel methods have been shown to exhibit good anomaly detection performance, however, they have high computational complexity. When anomaly detection is performed on a data stream, computational complexity is a key issue. Our approach uses the kernel hypersphere, which does not require a computationally complex operation in order to form the model. We introduce an incremental update and downdate to the model to further reduce computational complexity. Evaluations on synthetic and real-world datasets show that the incremental kernel hypersphere exhibits competitive performance when compared to other anomaly detectors.

Item Type:Conference Proceedings
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Imran, Professor Muhammad
Authors: O'Reilly, C., Gluhak, A., and Imran, M.
College/School:College of Science and Engineering > School of Engineering
ISBN:9781479911806
Published Online:14 November 2013

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