关键词: 协同设计, 本体, 逆向工程, 粗糙集理论, 产品数据管理, 数据库

Abstract: Aiming at the ontology construction problem in collaborative design domain, an ontology learning model based on reverse engineering and rough sets for collaborative design domain was established. Physical data model and conceptual data model were obtained through Product Data Management (PDM) database reverse engineering, from which the entities related to the information and development process of product were extracted. Mapping rules from relational database model to ontology were established and relationships among entities were learned. Meanwhile, according to the obtained entity information, knowledge databases oriented to specific subject were constructed by acquiring data from the PDM database. More concepts and implicit semantic information were mined from the data stored in these knowledge databases by using rough sets.This method of ontology construction in collaborative design domain inherited the knowledge and experiences, reduced dependence on the domain experts, and it improved the efficiency and decreased the cost of ontology construction.

Key words: collaborative design, ontology, reverse engineering, rough set theory, product data management, database