期刊名称：International Journal of Software Engineering and Its Applications
印刷版ISSN：1738-9984
出版年度：2013
卷号：7
期号：2
出版社：SERSC
摘要：In UML 2.0, activity and state diagrams are used in a wide range of applications, including business process modeling, software development, and descriptions of basic mechanisms such as computations. They are enriched with some advanced features such as exceptions, loops, and streaming in activity diagrams; nevertheless, several semantic questions have been raised concerning some of these diagrams. Proposals have been introduced to base the semantics of activity diagrams on Petri-nets, but such mapping is not general enough to apply to complicated constructs of activities. In this paper, we propose that these semantic problems are inherent in the nature of description in UML diagrams. Consequently, we propose development of new types of diagrams with more appropriate, precise semantics.
关键词：UML 2.0; Activity diagrams; statechart; semantics; conceptual model
