基于领域本体的复杂产品设计知识检索技术  

Design knowledge retrieval technology based on domain ontology for complex products

作　　者：余旭[1] 刘继红[1] 何苗[1] 

机构地区：[1]北京航空航天大学机械工程及自动化学院,北京100191

出　　处：《计算机集成制造系统》2011年第2期225-231,共7页Computer Integrated Manufacturing Systems

摘　　要：为解决产品数据管理系统中知识难以被发现和重用的问题,提出基于领域本体的设计知识检索技术。利用"领域本体—索引知识—数据资源"三层映射结构表达设计知识,形成以领域本体为语义模型和以索引知识为引导的设计知识体系。提出了基于语义的知识检索方法,对设计问题进行语义解析,转换成本体概念集,利用向量空间模型的相似度算法,在检索词元权重中引入语义关系权重,在索引知识词元权重中引入知识域权重,最终匹配符合设计人员检索意图的设计知识。以飞航导弹总体方案设计为例验证了知识检索技术的可行性。To solve the problem that knowledge couldn＇t be discovered and reused easily in product data management system,a design knowledge retrieval technology based on domain ontology was proposed.A ＂domain ontology-index knowledge-data resource＂ three-layer mapping structure was put forward to represent design knowledge.The design knowledge system was formed consisting of domain ontology as semantic model and index knowledge as searching index.A new knowledge retrieval method based on semantics was put forward.Design problem was analyzed based on semantics and transformed into ontology concepts.To match knowledge which satisfied designer＇s search intentions,a text similarity computation based on vector space model which introduced relation weight to those ontology concepts and domain weight to words of knowledge text was proposed.Finally,an example of cruise missile＇s overall design was provided to reveal the feasibility of retrieval technology.

关 键 词：产品设计 领域本体 知识表达 知识检索 飞航导弹 

分 类 号：TH122[机械工程—机械设计及理论] TP391[自动化与计算机技术—计算机应用技术]