Host: Japan Society for Fuzzy Theory and Intelligent Informatics (SOFT)
Pages 580-585
Questionnaire research is one of the most useful approaches to obtain the direction of the market or consumer tastes. However, it is an important issue and a hard difficulty to design the questions properly. For example, when the respondents catch two or more questions in the questionnaire as a same/similar meaning, that means a loss of information for analysis. It is, however, difficult to predict how respondents catch the meaning of questions and the variation of them before the questionnaire. On the other hand, it is possible to analyze the view of the respondents for the questions and how proper they were after the questionnaire. This paper aims to analyze the relationship between questions in questionnaire data and to feed back into the design of questions for the next questionnaire. This paper defines "question vector" in the evaluation object space and proposes the analysis method of the relationship between questions based on the angle of question vectors.
