抄録
Design concept generation is an important task for producing innovative products. Many methods have been proposed for supporting design concept generation, such as variations of brainstorming, morphological analysis, and so on. However, few research are present to prove their effects. The future goal of this research is to build a systematic method for design concept generation, which is called ECF cycle, based on a rational model of concept space operation. Toward this goal, this paper aims at clarifying the characteristics of a concept space which promote effective concept generation with ECF cycle. This paper proposes a method of experimental study to evaluate a concept space. The incompleteness introduced by General Design Theory and the concreteness are focused as the characteristics of a concept space. The experiment study analyzes the relation between them. Two viewpoints are used to evaluate the incompleteness: a defect that an entity concept is wrongly classified and a defect that any abstract concept is missing to classify multiple entity concepts. This paper shows the result of the experiment study and discusses its implications.
