Maintaining knowledge about temporal intervals
Communications of the ACM
The WSLA Framework: Specifying and Monitoring Service Level Agreements for Web Services
Journal of Network and Systems Management
QoS-Aware Middleware for Web Services Composition
IEEE Transactions on Software Engineering
A QoS Broker Based Architecture for Efficient Web Services Selection
ICWS '05 Proceedings of the IEEE International Conference on Web Services
QoS-Aware Replanning of Composite Web Services
ICWS '05 Proceedings of the IEEE International Conference on Web Services
Adaptation inWeb Service Composition and Execution
ICWS '06 Proceedings of the IEEE International Conference on Web Services
Semantic QoS-based Web Service Discovery Algorithms
ECOWS '07 Proceedings of the Fifth European Conference on Web Services
A Meta-model for Non-functional Property Descriptions of Web Services
ICWS '08 Proceedings of the 2008 IEEE International Conference on Web Services
Adaptation of Web Service Composition Based on Workflow Patterns
ICSOC '08 Proceedings of the 6th International Conference on Service-Oriented Computing
Monitoring and diagnosing software requirements
Automated Software Engineering
An Approach to Non-functional Property Evaluation of Web Services
ICWS '09 Proceedings of the 2009 IEEE International Conference on Web Services
Advanced Non-functional Property Evaluation of Web Services
ECOWS '09 Proceedings of the 2009 Seventh IEEE European Conference on Web Services
Dealing with fixable and non-fixable properties in service matchmaking
ICSOC/ServiceWave'09 Proceedings of the 2009 international conference on Service-oriented computing
Design for adaptation of service-based applications: main issues and requirements
ICSOC/ServiceWave'09 Proceedings of the 2009 international conference on Service-oriented computing
Adaptive web processes using value of changed information
ICSOC'06 Proceedings of the 4th international conference on Service-Oriented Computing
A fuzzy service adaptation based on QoS satisfaction
CAiSE'11 Proceedings of the 23rd international conference on Advanced information systems engineering
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Requirements of Service Based Applications (SBAs) tend to change during the life cycle of the service. Therefore, adaptation and evolution of services become a necessity in order to provide the agreed Quality of Service (QoS) stated in a contract between the service provider and requestor. Recently, many adaptation methods have been proposed in the literature. However, there is no overall consensus in selecting the best strategy and the consequences of adaptation are usually neglected. In this paper, we propose an approach for service adaptation through defining a flexible service description using fuzzy parameters. This approach provides a compatibility mechanism that measures the aggregated satisfaction value of offered services to understand to what extent the quality changes are satisfiable according to the existing contract. According to the degree of satisfaction function we then propose our adaptation/evolution strategy.