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• W2099635895 abstract "Management metrics of complex software systems exhibit stable correlations which can enable fault detection and diagnosis. Current approaches use specific analytic forms, typically linear, for modeling correlations. In this paper we use normalized mutual information as a similarity measure to identify clusters of correlated metrics, without knowing the specific form. We show how we can apply the Wilcoxon rank-sum test to identify anomalous behaviour. We present two diagnosis algorithms to locate faulty components: RatioScore, based on the Jaccard coefficient, and SigScore, which incorporates knowledge of component dependencies. We evaluate our mechanisms in the context of a complex enterprise application. Through fault injection experiments, we show that we can detect 17 out of 22 faults without any false positives. We diagnose the faulty component in the top five anomaly scores 7 times out of 17 using SigScore, which is 40% better than when system structure is ignored." @default.
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• W2099635895 date "2009-06-01" @default.
• W2099635895 modified "2023-09-22" @default.
• W2099635895 title "Automatic fault detection and diagnosis in complex software systems by information-theoretic monitoring" @default.
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• W2099635895 doi "https://doi.org/10.1109/dsn.2009.5270324" @default.
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