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Fusion of structure adaptive self-organizing maps using fuzzy integral

Recently, many researchers attempt to develop an effective SOM-based pattern recognizer for high performance classification. Structure adaptive self-organizing map (SASOM) is a variant of SOM that is useful to pattern recognition and visualization. Fusion of classifiers can overcome the limitation of a single classifier by complementing each other. Fuzzy integral is a combination scheme that uses subjectively defined relevance of classifiers. In this paper, fusion of SASOM's using fuzzy integral is proposed for Web mining problem. User profile represents different aspects of user's characteristics and needs an ensemble of classifier that estimate user's preference using Web content labeled by user as "like" or "dislike." The proposed method estimates the user profile using subsets of important features extracted from user-rated Web documents. Using UCI Syskill & Webert data, the method is tested and compared with other classifier including ID3, BP and naive Bayes classifier. Experimental results show that the fusion of SASOM's using fuzzy integral can perform better than not only previous studies but also majority voting of SASOM's.