【摘要】 分析了产品信息建模在企业大规模知识处理中遇到的STEP(产品数据交换标准)系列标准之间、应用协议之间的语义不一致问题,提出了基于本体论及语义Web的产品信息建模的观点.建立了对象封装、中间件、企业应用的产品信息模型层次化结构,通过引入中间件层,实现产品信息语义一致性,增强了模型互操作性.研究了用语义Web语言DAML+OIL形式化描述基于知识的产品信息模型的方法,给出了由EXPRESS模式到DAML+OIL语言的映射的具体实现机制,包括数据类型、实体声明和界面规范的映射方法,以此作为构建中间件层的基础.以一个基于DAML+OIL的产品信息模型作为描述实例.更多还原

【Abstract】 Researches on product information model, modeling method and operation method are the key issues for supporting knowledge processing and sharing in modern enterprise.A knowledge-based product information modeling framework was proposed according to the methodology of Ontology and Semantic Web. There are three layers in the model: object wrapper, middleware, and enterprise application. By introduction of ontology-driven middleware layer, production information semantics was kept consistent and the interoperability between models was enhanced. A mapping method from EXPRESS schema to DAML+OIL was given as the basis of construction of the middleware layer. The advantage of the method was illustrated with an example of product information model in DAML+OIL.更多还原