QoS-aware service composition in dynamic service oriented environments
Nebil Ben Mabrouk,Sandrine Beauche,Elena Kuznetsova,Nikolaos Georgantas,Valérie Issarny +4 more
- Vol. 5896, pp 123-142
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TLDR
This paper presents an efficient service selection algorithm that provides the appropriate ground for QoS-aware composition in dynamic service environments, formed as a guided heuristic.Abstract:
QoS-aware service composition is a key requirement in Service Oriented Computing (SOC) since it enables fulfilling complex user tasks while meeting Quality of Service (QoS) constraints. A challenging issue towards this purpose is the selection of the best set of services to compose, meeting global QoS constraints imposed by the user, which is known to be a NP-hard problem. This challenge becomes even more relevant when it is considered in the context of dynamic service environments. Indeed, two specific issues arise. First, required tasks are fulfilled on the fly, thus the time available for services' selection and composition is limited. Second, service compositions have to be adaptive so that they can cope with changing conditions of the environment. In this paper, we present an efficient service selection algorithm that provides the appropriate ground for QoS-aware composition in dynamic service environments. Our algorithm is formed as a guided heuristic. The paper also presents a set of experiments conducted to evaluate the efficiency of our algorithm, which shows its timeliness and optimality.read more
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QoS-aware middleware for Web services composition
Liangzhao Zeng,Boualem Benatallah,Anne H. H. Ngu,Marlon Dumas,Jayant R. Kalagnanam,Henry Chang +5 more
TL;DR: This paper presents a middleware platform which addresses the issue of selecting Web services for the purpose of their composition in a way that maximizes user satisfaction expressed as utility functions over QoS attributes, while satisfying the constraints set by the user and by the structure of the composite service.
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Efficient algorithms for Web services selection with end-to-end QoS constraints
Tao Yu,Yue Zhang,Kwei-Jay Lin +2 more
TL;DR: A broker-based architecture is designed to facilitate the selection of QoS-based services and efficient heuristic algorithms for service processes of different composition structures are presented.
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