Paper:
Language: English:

QoS Constrains Model: Establishing QoS Association for Ontology-Based Web Service Selection Mechanism

Laila Taher^, Rawshan Basha^, and Hazem El Khatib^

^Information Technology Department, Roads & Transport Authority, Dubai, P.O.Box 118899, United Arab Emirates
^Department of Computer Science, University of Sharjah, Sharjah, P.O.Box 27272, United Arab Emirates
^College of Information Technology, UAE University, Al Ain, P.O.Box 17555, United Arab Emirates

Received: October 28, 2005

Accepted: March 17, 2006

Keywords: QoS, QoS-IC, QoS Manager, QoS-Constraints

Journal ref: Journal of Advanced Computational Intelligence and Intelligent Informatics, Vol.10, No.5 pp. 705-712, 2006

Abstract

Quality of Service (QoS) is an important criterion for Web service selection. The work in this paper is based on QoS Information & Computation framework (QoS-IC). QoS-IC framework supports QoS-based service selection in Service Oriented Architecture (SOA), namely Web services. In this paper, we extend the functionality of QoS-IC framework with QoS-Constraints Model. QoS-Constraints establish an association relationship between different QoS properties and are used to govern the QoS-based service selection in the underlying algorithm. We have enhanced the algorithm to accommodate QoS-Constraints and discussed an experimental evaluation based on an implementation prototype that shows how QoS-Constraints introduce efficiency to the QoS-based service selection mechanism and save valuable time for consumers.

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