Bounded Rationality Modeling in CAID

Differences in the perceptions of the products modeling between the clients and the designers is common thing in product design. The bounded rationality gives reasonable explanation that because of user´s the limited cognitive abilities and quantity of information they hold. In order to establish a multi-perception product model and design system, the user´s bounded rationality must be taken into account. This paper proposes a product design method which based on the user bounded rationality. A network surveying based on multi-perception image is firstly created to carry out.Then, essential elements to product modelling were recognized and sort out with qualitative analysis, as well as the corresponding relationship between the product design and a number of the multi-perception factors obtained through the second investigating. Based on this, the product design knowledge repository can thereby be established, and feature model identified through studying the user´s multi-perception image can help designer to improve the success rate of design proposals.