Change-point detection in time-series data by relative density-ratio estimation

The objective of change-point detection is to discover abrupt property changes lying behind time-series data. In this paper, we present a novel statistical change-point detection algorithm based on non-parametric divergence estimation between time-series samples from two retrospective segments. Our...

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Vydáno v:Neural networks Ročník 43; s. 72 - 83
Hlavní autoři: Liu, Song, Yamada, Makoto, Collier, Nigel, Sugiyama, Masashi
Médium: Journal Article
Jazyk:angličtina
Vydáno: Kidlington Elsevier Ltd 01.07.2013
Elsevier
Témata:
Algorithms
Applied sciences
Change-point detection
Computer science; control theory; systems
Data processing. List processing. Character string processing
Distribution comparison
Divergence
Exact sciences and technology
Gene Expression Profiling - methods
Humans
Inference from stochastic processes; time series analysis
Kernel methods
Mathematics
Memory organisation. Data processing
Messages
Models, Statistical
Neural networks
Probability and statistics
Relative density-ratio estimation
Retrospective Studies
Samples
Sciences and techniques of general use
Segments
Software
Specific Gravity
Speech
Statistical analysis
Statistics
Time Factors
Time-series data
Change-point detection
Kernel methods
Time-series data
Distribution comparison
Relative density-ratio estimation
Statistical analysis
Divergence
Event detection
Time series
Non parametric estimation
Social network
Change point
Kernel method
Lying
Human activity
Probability density function
Web site
ISSN:0893-6080, 1879-2782, 1879-2782
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Shrnutí:The objective of change-point detection is to discover abrupt property changes lying behind time-series data. In this paper, we present a novel statistical change-point detection algorithm based on non-parametric divergence estimation between time-series samples from two retrospective segments. Our method uses the relative Pearson divergence as a divergence measure, and it is accurately and efficiently estimated by a method of direct density-ratio estimation. Through experiments on artificial and real-world datasets including human-activity sensing, speech, and Twitter messages, we demonstrate the usefulness of the proposed method.
Bibliografie:ObjectType-Article-1
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ISSN:0893-6080
1879-2782
1879-2782
DOI:10.1016/j.neunet.2013.01.012