Recently, a Web site has affected the impression of a company or a university. Few researches verified the relation between the composition elements of a Web site and sense of values using the nonlinear method like rough sets. Then, in this study, we made the Web site of the university belonging to a design and an information design field into a case study, and aim at clarification of the relation between the composition elements and the users' sense of values for the Web site. First, the evaluation questionnaire for sample Web sites was performed using six evaluation terms concerning the sense of value. Next, we analyzed the result of questionnaire by using multiple regression analysis, and clarified the evaluation terms affected the degree of charm. As a result, the subjects were classified by their sense of values at five clusters. Furthermore, the combinations of the composition elements of the Web site affected the degree of charm in each cluster were extracted using rough sets. As a result of verifying a new Web site on the basis of the above result, it was shown that an impression and charm are controllable.
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