中文摘要：

面向产品设计人员的知识推送服务为设计人员提高其对知识的重用提供了有效的解决途径。文章首先讨论了知识服务的概念及分类,然后描述了产品设计人员的知识需求,包括设计人员知识需求的生成方法与更新原则以及基于概念语义扩展的设计知识检索方法;在此基础上,给出了面向产品设计人员的知识服务层次模型和需求驱动的产品设计知识服务运行模式,并通过实例对该模式进行了系统实现与验证,应用表明该系统可有效提高设计人员知识获取的效率。

英文摘要：

The knowledge push service for product designers provides an effective solution to improve their ability of knowledge reuse.This paper firstly discusses the concept and classification of knowledge service.Then it describes the knowledge demand of product designers including its generation method and updating principle,and introduces the method of design knowledge search based on concept semantic extension.The level model of knowledge service for product designers and the running mode of demand-driven product design knowledge service are also given.Finally by the realization and test with an example,the system is proved to be effective in improving the efficiency of designers＇ knowledge acquirement.