Rethinking the Use of Models in Software Architecture
QoSA '08 Proceedings of the 4th International Conference on Quality of Software-Architectures: Models and Architectures
Quality Prediction of Service Compositions through Probabilistic Model Checking
QoSA '08 Proceedings of the 4th International Conference on Quality of Software-Architectures: Models and Architectures
Model Driven QoS Analyses of Composed Web Services
ServiceWave '08 Proceedings of the 1st European Conference on Towards a Service-Based Internet
On the Consolidation of Data-Centers with Performance Constraints
QoSA '09 Proceedings of the 5th International Conference on the Quality of Software Architectures: Architectures for Adaptive Software Systems
Qos-driven runtime adaptation of service oriented architectures
Proceedings of the the 7th joint meeting of the European software engineering conference and the ACM SIGSOFT symposium on The foundations of software engineering
QoS broker-based trust model for effective web service selection
SEA '07 Proceedings of the 11th IASTED International Conference on Software Engineering and Applications
Performance prediction of web service workflows
QoSA'07 Proceedings of the Quality of software architectures 3rd international conference on Software architectures, components, and applications
CDVE'09 Proceedings of the 6th international conference on Cooperative design, visualization, and engineering
Per-flow optimal service selection for Web services based processes
Journal of Systems and Software
A QOS enhanced framework and trust model for effective web services selection
Journal of Web Engineering
A QOS enhanced framework and trust model for effective web services selection
Journal of Web Engineering
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Service composition is one of the most promising advantages of the service-oriented paradigm. In a service market scenario, given a functional description of a service, different providers may offer diverse service implementations that match such a functional description but differ for some QoS attributes. A key point for the construction of a suitable composition is the selection of the services that best meet the QoS requirements of the composite service users. In this paper, we consider a broker-based architecture for service composition, focusing on the service selection problem and assuming that the broker supports different QoS classes. We formulate the service selection as a constrained optimization problem, where each QoS class is modeled by suitable constraints. Differently from most of the existing approaches to service selection, in our approach the broker optimizes the overall QoS of a flow of requests rather than of a single request.