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Issue No.03 - March (2004 vol.16)
pp: 292-300
ABSTRACT
<p><b>Abstract</b>—In this article, we propose a rough-fuzzy hybridization scheme for case generation. Fuzzy set theory is used for linguistic representation of patterns, thereby producing a fuzzy granulation of the feature space. Rough set theory is used to obtain dependency rules which model informative regions in the granulated feature space. The fuzzy membership functions corresponding to the informative regions are stored as cases along with the strength values. Case retrieval is made using a similarity measure based on these membership functions. Unlike the existing case selection methods, the cases here are cluster granules and not sample points. Also, each case involves a reduced number of relevant features. These makes the algorithm suitable for mining data sets, large both in dimension and size, due to its low-time requirement in case generation as well as retrieval. Superiority of the algorithm in terms of classification accuracy and case generation and retrieval times is demonstrated on some real-life data sets.</p>
INDEX TERMS
Case-based reasoning, linguistic representation, rough dependency rules, granular computing, rough-fuzzy hybridization, soft computing, pattern recognition, data mining.
CITATION
Sankar K. Pal, Pabitra Mitra, "Case Generation Using Rough Sets with Fuzzy Representation", IEEE Transactions on Knowledge & Data Engineering, vol.16, no. 3, pp. 292-300, March 2004, doi:10.1109/TKDE.2003.1262181
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