Fuzzy projection pursuit ID3

We propose a projection pursuit regression (PPR) algorithm based on Quilan´s ID3, in which objects are tested by linear projections of attributes instead of the attribute value itself. Projection pursuit ID3 (PP-ID3) is able to generate simpler decision trees since nodes are represented by linear projections of all attribute values. The other aim of this paper is to analyse the feeling-design relations using the PP-ID3. In order to apply the PP-ID3 for the data about feeling and emotion collected by pairwise comparisons, we further improve the algorithm to deal with pairwise comparison data in the similar way to Guttman´s (1946) method. The relation between design components of T-shirt and adjective words “conspicuous” or “quiet” is analysed with PP-ID3