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The Uni ed Modeling Language UML is rapidly emerging as a de facto standard for modelling OO systems Given this role it is imperative that the UML needs a well de ned fully explored semantics Such semantics is required in order to ensure that UML concepts are precisely stated and de ned In this paper we motivate an approach to formalizing UML in which(More)
We describe a compositional approach to the formal interpretation of type view diagrams and statecharts. We deene theories for object instances and classes, and theories for associations between them. These theories are combined with categorical constructions to yield a formalisation of the entire system. We observe that some notations require the(More)
UML-RSDS K. Lano, S. Kolahdouz-Rahimi Dept. of Computer Science, King’s College London Work carried out within HoRTMoDA EPSRC project • UML-RSDS can specify and verify model transformations using a combination of UML and formal methods. • We describe these techniques, with extracts from three large model transformation case studies. Model Transformations(More)
This paper provides a systematic evaluation framework for comparing model transformation approaches, based upon the ISO/IEC 9126-1 quality characteristics for software systems. We apply this framework to compare five transformation approaches (QVT-R, ATL, Kermeta, UMLRSDS and GrGen.NET) on a complex model refactoring case study: the amalgamation of apparent(More)
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The Unified Modeling Language (UML) is rapidly emerging as a de-facto standard for modelling OO systems. Given this role, it is imperative that the UML have a welldefined, fully explored semantics. Such semantics is required in order to ensure that UML concepts are precisely stated and defined. In this paper we describe and motivate an approach to(More)