Information Modelling for System Specification Representation

Abstract -- This paper presents the emerging STEP standard AP-233 with focus on the non-functional requirements that have guided the development process. The purpose of the paper is to present and motivate the modelling assumptions and approach selected for the AP-233 information model, and to present how the EXPRESS information modelling language have been used. Although the paper is focused on AP-233 and the constraints imposed by the STEP framework it is believed the structures and requirements presented are general and applicable to other systems engineering information-modelling projects.

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