Xu, Yuanping, Xu, Zhijie, Jiang, Xiang and Paul, Scott (2010) Developing a Knowledge-based System for Complex Geometrical Product Specification (GPS) Data Manipulation. Knowledge Based Systems, 24 (1). pp. 10-22. ISSN 0950-7051

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Geometrical product specification and verification (GPS) matrix system is a universal tool for expressing
geometrical requirements on product design drawings. It benefits product designers through providing
detailed description of functional requirements for geometrical products, and through referring to corresponding
manufacturing and verification processes. In order to overcome current implementation problems
highlighted in this paper, a GPS knowledge base and a corresponding innovative inference
mechanism have been researched, which led to the development of an integrated GPS knowledge-based
system to facilitate rapid and flexible manufacturing requirements. This paper starts with a brief introduction
of GPS, GPS application problems and the project background. It then moves on to demonstrate
a unified knowledge acquisition and representation mechanism based on the category theory (CT) with
five selected examples of this project. The paper concludes with a discussion on the future works for this

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