Title: Toward a contextual quality of service evaluation approach

Authors: Jokha Al-Kalbani; Yassine Jamoussi; Naoufel Kraiem; Zuhoor Abdullah Salim Al-Khanjari

Addresses: Department of Computer Science, College of Science, Sultan Qaboos University, PO Box 36, Al-Khoudh 123, Muscat, Oman ' Department of Computer Science, College of Science, Sultan Qaboos University, PO Box 36, Al-Khoudh 123, Muscat, Oman; RIADI Lab, University of Manouba, Tunis, Tunisia ' Department of Computer Science, College of Science, Sultan Qaboos University, PO Box 36, Al-Khoudh 123, Muscat, Oman; RIADI Lab, University of Manouba, Tunis, Tunisia ' Department of Computer Science, College of Science, Sultan Qaboos University, PO Box 36, Al-Khoudh 123, Muscat, Oman

Abstract: The Quality of Service (QoS) evaluation techniques are required because web services having same functional properties are not a guarantee to have the same quality. This paper deals with a new QoS evaluation method for web services. The objective of the proposed approach is to offer the use of the existing QoS evaluation/assessment methods in constructing a new contextual QoS evaluation approach. The proposed approach is a multi-layer technique specified with the MAP formalism. The principle of the proposed contextual-oriented modelling approach is to guide the evaluator during all web services evaluation steps using different methodologies at varied levels of abstractions. A better understanding of the major web services quality factors that affect QoS will help QoS evaluators to judge the most appropriate QoS evaluation approach corresponding to their user and business requirements with more flexibility in personalising the QoS evaluation process.

Keywords: web service; QoS evaluation techniques; map formalism; decision strategy; QoS prediction; contextual factors.

DOI: 10.1504/IJCAT.2019.097115

International Journal of Computer Applications in Technology, 2019 Vol.59 No.1, pp.82 - 94

Accepted: 12 Dec 2017
Published online: 21 Dec 2018 *

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