Strategic directions in constraint programming
ACM Computing Surveys (CSUR) - Special ACM 50th-anniversary issue: strategic directions in computing research
Semiring-based constraint satisfaction and optimization
Journal of the ACM (JACM)
Conceptual model of web service reputation
ACM SIGMOD Record
A model for web services discovery with QoS
ACM SIGecom Exchanges
DAML-QoS Ontology for Web Services
ICWS '04 Proceedings of the IEEE International Conference on Web Services
Semantic WS-agreement partner selection
Proceedings of the 15th international conference on World Wide Web
Automated semantic web service discovery with OWLS-MX
AAMAS '06 Proceedings of the fifth international joint conference on Autonomous agents and multiagent systems
ECOWS '06 Proceedings of the European Conference on Web Services
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The success of the Web Service (WS) paradigm has led to a proliferation of available WSs. Semantic discovery mechanisms have been invented to overcome UDDI's syntactic discovery solution by providing more precise results. However, the problem remains as many functionally-equivalent WSs are returned. Its solution comes in terms of semantic QoS-based description and discovery of WSs. We have already presented a rich and extensible ontology language for QoS-based WS description that is called OWL-Q and we have proposed a semantic QoS metric matching algorithm. Based on this algorithm, we have extended a Constraint-Programming-based approach for QoS-based WS discovery. In this paper, we show an extension of OWL-Q with SWRL rules and propose a modification to the metric matching algorithm to make it more feasible. Moreover, we propose and analyze an automated approach for semantic QoS-based WS discovery that provides solutions even for over-constrained QoS-based WS demands.