关键词: 产品设计知识, 知识推送, 激活扩散, 行为反馈, 动态推送

Abstract: To achieve precision and dynamics of product design knowledge push,a dynamic design knowledge push technology based on variable-weight layered spreading activation model was proposed.The architecture of product design knowledge push system was analyzed and variable-weight layered spreading activation model for product design knowledge push was established.The correlation of knowledge nodes was obtained by using cluster relation analysis method and push result was obtained through hierarchical spreading activation process.Combined with analysis of designers'behavior feedback,single-source and multi-source dynamic knowledge push approach was proposed.A prototype system was built on CNC machine tool design resource sharing platform to illustrate and validate the proposed method.

Key words: product design knowledge, knowledge push, spreading activation, behavior feedback, dynamic push