Information - Theoretic Methods for Anomaly Detection

islanding detection methods for microgrids

امروزه استفاده از منابع انرژی پراکنده کاربرد وسیعی یافته است . اگر چه این منابع بسیاری از مشکلات شبکه را حل می کنند اما زیاد شدن آنها مسائل فراوانی برای سیستم قدرت به همراه دارد . استفاده از میکروشبکه راه حلی است که علاوه بر استفاده از مزایای منابع انرژی پراکنده برخی از مشکلات ایجاد شده توسط آنها را نیز منتفی می کند . همچنین میکروشبکه ها کیفیت برق و قابلیت اطمینان تامین انرژی مشترکان را افزایش ...

Information-Theoretic Measures for Anomaly Detection

Anomaly detection is an essential component of the protection mechanisms against novel attacks. In this paper, we propose to use several information-theoretic measures, namely, entropy, conditional entropy, relative conditional entropy, information gain, and information cost for anomaly detection. These measures can be used to describe the characteristics of an audit data set, suggest the appro...

Information Theoretic Methods for Bioinformatics

1 Computer Learning Research Center, University of London, Royal Holloway TW20 0EX, UK 2 Helsinki Institute for Information Technology, University of Helsinki, P.O. Box 68, 00014 Helsinki, Finland 3 Centrum voor Wiskunde en Informatica (CWI), P.O. Box 94079, 1090 GB Amsterdam, The Netherlands 4 Laboratory of Computational Engineering, Helsinki University of Technology, P.O. Box 9203, 02015 HUT,...

The Information Theoretic Approach to Signal Anomaly Detection for Cognitive Radio

An information-theoretic measure for anomaly detection in complex dynamical systems

This paper presents information-theoretic analysis of time-series data to detect slowly evolving anomalies (i.e., deviations from a nominal operating condition) in dynamical systems. A measure for anomaly detection is formulated based on the concepts derived from information theory and statistical thermodynamics. The underlying algorithm is first tested on a low-dimensional complex dynamical sy...