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The increasing user mobility and more and more powerful mobile devices changed the way services are used today, e.g., by taking the user's location into account. Indeed, service interaction models are also influenced by this development making the ad hoc composition of complementary functionalities possible. Here, particular challenges remain in the field of composing services that are hosted on different...
Service orchestration languages such as BPEL have been established as de facto standard for the composition of Web services within service oriented architectures (SOA). Nevertheless, Web applications following the same principle of combining already existing services are still created as Mashups by coding against open 3rd party APIs. Within this paper, we build on a formal model for the representation...
Due to the increasing number of available services and the emergence of dynamic service composition approaches, many requests can be answered by multiple functionally equivalent service compositions. However, those compositions may vary in their non-functional properties such as resource consumption or user rating within a specific community. Moreover, this performance highly depends on the requesting...
Within domain-based service environments, service discovery through appropriate matchmaking procedures remains a key challenge. In particular, the consideration of additional context information and the need for dynamic and fast service publishing cause high demands on the according automatic matching procedures and the service description structures they are operating on.Within this paper, we introduce...
Service-oriented computing paradigms have considerably enhanced support for dynamic in modern computing environments by providing loosely coupled interactions between components. The key attainment is the ability to perform a late binding of service compositions, i.e., an allocation of actual services to service place holders during run-time. However, this attainment is limited to the binding of services...
The view on applications in large-scale open systems shifted to a service-oriented perspective, where each functional feature forming an application is regarded as service. The services which constitute an application can be physically spread over different network nodes and can be even provided by different administrative entities. According to the vision of the BIONETS project we are additionally...
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