Abstract
Paintings have some sensibility information to human hearts. But, the sensibility information will be different to person to person. We like some paintings, while other persons like another ones. For appreciation of paintings, grouping of paintings with similar sensitivity will be helpful. In this paper, we developed a distance measure relation among paintings for similarity grouping. Four similarity relations (types) are developed by the distance measure for classification of paintings. Impression words and color words play an important role for the sensibility expression of paintings. To verify the combination of these words, a self-organizing map(SOM) by two layered neural network, was applied for the grouping of paintings. It was shown that the combination of the impression words and color ones make a well similar grouping of paintings. Grouping similar paintings in impression words and color ones will be useful for a recommendation system.