A Semantic QoS-Aware Discovery Framework for Web Services
A Semantic QoS-Aware Discovery Framework for Web Services
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DOI：
10.1109/icws.2008.44
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发表时间：
2008-09
期刊：
影响因子：
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通讯作者：
Qian Ma;Hao Wang;Ying Li;G. Xie;Feng Liu
中科院分区：
文献类型：
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作者：
Qian Ma;Hao Wang;Ying Li;G. Xie;Feng Liu
用显式语义扩充Web服务构成了面向服务的体系结构（SOA）自动化的基础。随着越来越多的语义Web服务（SWS）的部署，类似的SWS可以有相当不同的服务质量（QoS）水平。QoS感知发现成为一个重要的挑战。虽然一些努力试图通过约束编程（CP）来解决它，但它们受到纯语法匹配方法的影响。此外，约束的构建和服务的选择完全依赖于从QoS描述的字面翻译，这增加了实际应用CP的障碍。在本文中，我们提出了一个语义QoS感知的框架SWS发现相结合的语义匹配和CP。首先，提出了一个QoS本体，将QoS数据定义为服务描述。然后采用本体推理的方法，将以往的句法匹配方法转化为语义匹配方法。通过确定概念的兼容性，复杂的QoS条件作为约束条件，并提出了一种选择算法，以获得最佳的报价。最后，我们的框架的原型实现进行了讨论和SWS发现的情况下，用来说明全面的发现过程。
Augmenting web services with explicit semantics forms the foundation of Service Oriented Architectures (SOAs) automation. As more and more Semantic Web Services (SWSs) are deployed, similar SWSs could have quite different quality-of-service (QoS) levels. The QoS-aware discovery becomes an important challenge. While some efforts try to solve it via Constraint Programming (CP), they suffer from the purely syntactic matchmaking method. Furthermore, the construction of constraints and the selection of services are completely dependent on the literal translation from QoS descriptions, which increase obstacles to actually apply CP. In this paper, we propose a semantic QoS-aware framework for SWSs discovery by combining the semantic matchmaking and CP. Initially, a QoS ontology is presented to define QoS data into service descriptions. Then the ontology reasoning is adopted to change previous syntactic matchmaking into a semantic way. Through confirming the compatibility of concepts, complex QoS conditions are solved as constraints and a selection algorithm is proposed to obtain the optimal offer. Finally, the prototype implementation of our framework is discussed and a SWSs discovery case is used to illustrate the comprehensive discovery process.