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Research on Maximal Frequent Pattern Outlier Factor for Online High- Dimensional Time-Series Outlier Detection
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BibTeX
@MISC{Lin_researchon,
author = {Feng Lin and Wang Le and Jin Bo and Feng Lin and Wang Le and Jin Bo},
title = {Research on Maximal Frequent Pattern Outlier Factor for Online High- Dimensional Time-Series Outlier Detection},
year = {}
}
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Abstract
doi:10.4156/jcit.vol5. issue10.9 Frequent pattern outlier factor is used to detect outliers with complete frequent itemsets. But it is difficult in real-world time-series data streams application because of its low efficiency. In this paper, we propose a novel maximal frequent pattern outlier factor (MFPOF) and an outlier detection algorithm (OODFP) for online high-dimensional time-series outlier detection. Firstly, the time-series data streams are processed with sliding window to discover maximal frequent itemsets. Then the frequent patterns are simplified to compute the MFPOF of time-series data streams. Experimental results show that our approach not only provides higher efficiency, but also equivalent accuracy.
Keyphrases
maximal frequent pattern outlier factor frequent pattern time-series data stream equivalent accuracy maximal frequent itemsets online high-dimensional time-series outlier detection novel maximal frequent pattern detection algorithm real-world time-series data stream application experimental result complete frequent itemsets low efficiency
