Abstract.Reuse is an important topic in software engineering as it promises advantages like faster time-to-market and cost reduction. Reuse of models on an abstract level is more beneficial than on the code level, because these models can be mapped into several technologies and can be adapted according to different requirements. Unfortunately, development tools only provide fixed mappings between abstract models described in a language such as UML and source code for a particular technology. These mappings are based on one-to-one relationships between elements of both levels. As a consequence, it is rarely possible to customize mappings according to specific user requirements. We aim to improve model reuse by providing a framework that generates customized mappings according to specified requirements. The framework is able to handle mappings aimed for several component technologies as it is based on an ADL. It is realized in Triple to represent components on different levels of abstraction and to perform the actual transformation. It uses feature models to describe mapping alternatives.

The current paper presents work in progress in integrated management of artefacts inautomotive electronics with a focus on requirements. A case study on industrial requirements management was performed in a Swedish automotive supplier of softwareintensive systems. Based on this case study, a frame concept for integrated model management is proposed. One core element in implementing the frame concept is an ontology-based domain repository. Concepts, architecture and realization of a domainrepository are introduced. The domain repository is based on RDF, RDFS and TRIPLE and includes extensions supporting navigation in the artefact net and derivation of new knowledge: modlets, actlets and spot views.

Semantic Web technologies have in recent years started to also find their way into the world of commercial enterprises. Enterprise ontologies can be used as a basis for determining the relevance of information with respect to the enterprise. The interests of individuals can be expressed by means of the enterprise ontology. The main contribution of our approach is the integration of point set distance measures with a modified semantic distance measure for pair-wise concept distance calculation. Our combined measure can be used to determine the intra-ontological distance between sub-ontologies.

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