Rough set approach to customer satisfaction analysis

Salvatore Greco, B. Matarazzo, R. Slowinski

    Research output: Chapter in Book/Report/Conference proceedingChapter (peer-reviewed)peer-review


    Customer satisfaction analysis has become a hot issue in strategic management. The basis of any decision in this field is the analysis of the answers of a sample of customers to a specific questionnaire. Traditionally, using a methodology called conjoint analysis, the data obtained from the questionnaires are used to build a collective utility function representing customer preferences. This utility function permits to measure the satisfaction of the customers and to determine the most critical features relevant for the appreciation of the considered products or services. In this paper, we propose an alternative methodology to analyze the data from the questionnaire. Our approach is based on the rough set methodology and represents the preferences of the customers by means of simple decision rules such as "if feature α is considered good and feature β is considered sufficient, then the overall evaluation of the product is medium". The interpretation of the decision rules is simpler and more direct than the interpretation of the utility function given by conjoint analysis. Moreover, the capacity of representing customer preferences in terms of easily understandable "if ..., then..." statements expressed in the natural language makes our approach particularly interesting for Kansei Engineering. The proposed methodology gives also some indications relative to strategic interventions aimed at improving the quality of the offered products and services. The expected efficiency of these interventions is measured, which is very useful for the definition of proper customer satisfaction strategies. Our approach supplies an integrated support to customer satisfaction oriented management.
    Original languageEnglish
    Title of host publicationRough sets and current trends in computing: proceedings of the 5th international conference
    EditorsSalvatore Greco, Y. Hata, S. Hirano, M. Inuiguchi, S. Miyamoto, H. Nguyen, R. Slowinski
    Place of PublicationBerlin
    Number of pages12
    ISBN (Print)9783540476931
    Publication statusPublished - 2006

    Publication series

    NameLecture notes in computer science
    ISSN (Print)0302-9743


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