Abstract
This paper proposes a method for investi- gating users' impressions of products using a Fuzzy C4.5 decision tree. A survey was conducted through a questionnaire that asked subjects about their intuitive impressions of the appearance of running shoes. The answers to the questions were very subjective and indefinite. This subjectivity and vagueness could cause difficulty in constructing a reliable decision tree. In this study, we propose a method for obtaining a reliable decision tree and determining rules affecting user impressions. A decision tree was then built using questionnaire results to help uncover major factors affecting the product' s attractiveness. Moreover, we developed an application for the visualization of analytical results.
