Data clustering using variable precision rough set

Authors:
Iwan Tri Riyadi Yanto;Tutut Herawan;Mustafa Mat Deris
Affiliations:
(Correspd. E-mail: iwan015@gmail.com) Department of Mathematics, Universitas Ahmad Dahlan, Yogyakarta, Indonesia;Department of Mathematics Education, Universitas Ahmad Dahlan, Yogyakarta, Indonesia;Faculty of Computer Science and Information Technology, Universiti Tun Hussein Onn Malaysia, Johor, Malaysia
Venue:
Intelligent Data Analysis
Year:
2011

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Abstract

Clustering a set of objects into homogeneous classes is a fundamental operation in data mining. Several cluster analysis techniques have been developed to group objects having similar characteristics. Recently, many attentions have been put on categorical data clustering, where data objects are made up of non-numerical attributes. An algorithm termed MMR using classical rough set theory was proposed to deal with problems in clustering categorical data. However, the MMR algorithm fails to handle noisy data as an integral part of databases. In this paper, an alternative technique for clustering noisy categorical data using Variable Precision Rough Set model is proposed. The results show that the technique provides better performance in selecting the clustering attribute.