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| A Web Service Selection Algorithm Based on Multiple QoS Registration Centers and Heterogeneous QoS Model |
| Zhang Long-chang Zou Hua Yang Fang-chun |
| State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China |
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Abstract Web service selection based on QoS is still challenging because the multiple QoS registration centers and heterogeneous QoS models make decision-making hard. Based on Multi-Attribute Group Decision-Making (MAGDM) theory, this paper presents a novel Multiple Registration centers and Heterogeneous QoS model’s Web Service Selection Algorithm (MRHQ_WSSA) to solve the above difficulties for the first time. Through evaluating the QoS information of all QoS registration centers, MRHQ_WSSA can obtain the synthetically optimal composition plan. It includes five main steps: normalizing the user’s QoS preference, calculating the group preference, weighting normalized decision-matrix, determining group ideal solution and calculating the relative closeness to the group ideal solution. And a set of experiments demonstrate the benefits and effectiveness of the approach.
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Received: 26 March 2010
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Corresponding Authors:
Zhang Long-chang
E-mail: zlc_771206@sohu.com
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2011, Vol. 33 
