Goal-directed requirements acquisition
6IWSSD Selected Papers of the Sixth International Workshop on Software Specification and Design
Maintaining knowledge about temporal intervals
Communications of the ACM
Probabilistic Symbolic Model Checking with PRISM: A Hybrid Approach
TACAS '02 Proceedings of the 8th International Conference on Tools and Algorithms for the Construction and Analysis of Systems
A Systematic Tradeoff Analysis for Conflicting Imprecise Requirements
RE '97 Proceedings of the 3rd IEEE International Symposium on Requirements Engineering
Reasoning about Uncertainty
QoS-Aware Middleware for Web Services Composition
IEEE Transactions on Software Engineering
Reasoning about partial goal satisfaction for requirements and design engineering
Proceedings of the 12th ACM SIGSOFT twelfth international symposium on Foundations of software engineering
QoS-Aware Replanning of Composite Web Services
ICWS '05 Proceedings of the IEEE International Conference on Web Services
Goal-oriented specification of adaptation requirements engineering in adaptive systems
Proceedings of the 2006 international workshop on Self-adaptation and self-managing systems
Adaptation inWeb Service Composition and Execution
ICWS '06 Proceedings of the IEEE International Conference on Web Services
Selection ofWeb Services with Imprecise QoS Constraints
WI '07 Proceedings of the IEEE/WIC/ACM International Conference on Web Intelligence
Semantic QoS-based Web Service Discovery Algorithms
ECOWS '07 Proceedings of the Fifth European Conference on Web Services
An environment for flexible advanced compensations of Web service transactions
ACM Transactions on the Web (TWEB)
A Meta-model for Non-functional Property Descriptions of Web Services
ICWS '08 Proceedings of the 2008 IEEE International Conference on Web Services
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
RELAX: Incorporating Uncertainty into the Specification of Self-Adaptive Systems
RE '09 Proceedings of the 2009 17th IEEE International Requirements Engineering Conference, RE
MODELS '09 Proceedings of the 12th International Conference on Model Driven Engineering Languages and Systems
RELAX: a language to address uncertainty in self-adaptive systems requirement
Requirements Engineering - RE'09 Special Issue; Guest Editor:Kevin T Ryan
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
Adaptation of web services based on QoS satisfaction
ICSOC'10 Proceedings of the 2010 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-based service adaptation middleware for context-aware computing
EUC'06 Proceedings of the 2006 international conference on Embedded and Ubiquitous Computing
A penalty-based approach for qos dissatisfaction using fuzzy rules
ICSOC'11 Proceedings of the 9th international conference on Service-Oriented Computing
A survey of change management in service-based environments
Service Oriented Computing and Applications
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Quality of Service (QoS) once defined in a contract between two parties may change during the life-cycle of Service-Based Applications (SBAs). Changes could be due to system failures or evolution of quality requirements from the involved parties. Therefore, Web Services need to be able to adapt dynamically to respond to such changes. Adaptation and evolution of services are playing an important task in this domain. An essential issue to be addressed is how to efficiently select an adaptation while, there exists different strategies. We propose a fuzzy service adaptation approach that works based on the degree of QoS satisfaction. In particular, we define fuzzy parameters for the QoS property descriptions of Web Services. This way, partial satisfaction of parameters is allowed through measuring imprecise requirements. The QoS satisfaction degree is measured using membership functions provided for each parameter. Experimental results show the effectiveness of the fuzzy approach using the satisfaction degree in selecting the best adaptation strategy.