Abstract
Recently designers and engineers need to come up with creative, innovative and valuable design ideas. In this paper, we first discuss concepts of function (F), behavior (B) and structure (S) of a product used in engineering design field and a concept of user experience (UX) used in product design field. Then we propose a delta design map based on F, B, S and UX as a framework for a systematic method and computational tool for design ideation support. A delta design map does not describe F, B, S and UX for each design example but describes their differences (deltas) between design examples. By preparing a delta design map, we can systematically and exhaustively analyze the potential similarity among all design examples from the viewpoint of F, B, S and UX and obtain triggers for ideation. The results of a simple trial of the proposed method is presented. To make an effective delta design map for ideation, ideally huge numbers of design examples (their functions, behaviors, structures and user experiences) need to be described and stored. Since such data gathering seems difficult by hands, the authors are now working in machine-learning approach to data collection from potential data sources such as internet. This paper describe the beginning of such trial.
