Title
Atypicity detection in data streams: A self-adjusting approach
Abstract
Outlyingness is a subjective concept relying on the isolation level of a (set of) record(s). Clustering-based outlier detection is a field that aims to cluster data and to detect outliers depending on their characteristics (i.e. small, tight and/or dense clusters might be considered as outliers). Existing methods require a parameter standing for the "level of outlyingness", such as the maximum size or a percentage of small clusters, in order to build the set of outliers. Unfortunately, manually setting this parameter in a streaming environment should not be possible, given the fast time response usually needed. In this paper we propose Wod, a method that separates outliers from clusters thanks to a natural and effective principle. The main advantages of Wod are its ability to automatically adjust to any clustering result and to be parameterless.
Year
DOI
Venue
2011
10.3233/IDA-2010-0457
Intell. Data Anal.
Keywords
Field
DocType
effective principle,cluster data,parameter standing,main advantage,isolation level,atypicity detection,clustering-based outlier detection,clustering result,dense cluster,fast time response,data stream,small cluster,self-adjusting approach
Data mining,Cluster (physics),Anomaly detection,Data stream mining,Isolation (database systems),Pattern recognition,Computer science,Outlier,Artificial intelligence,Cluster analysis,Machine learning,Time response
Journal
Volume
Issue
ISSN
15
1
1088-467X
Citations 
PageRank 
References 
1
0.35
20
Authors
2
Name
Order
Citations
PageRank
Alice Marascu1707.94
Florent Masseglia240843.08