Towards Dynamic Reconfiguration of a Composite Web Service: An Approach Based on QoS Prediction
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Department of Mathematics and Computer Science RelaCS2 Laboratory, University Larbi Ben Mhidi, Oum El Bouaghi 04000, Algeria
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AUDENSIEL Pôle R&D, 92100 Boulogne-Billancourt, France
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Author to whom correspondence should be addressed.
Academic Editor: Feliz Gouveia
Electronics 2021, 10(13), 1597; https://doi.org/10.3390/electronics10131597
Received: 10 May 2021
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Revised: 24 June 2021
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Accepted: 28 June 2021
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Published: 2 July 2021
(This article belongs to the Special Issue Pervasive Intelligence in Information Technology)
Service-oriented architecture provides the ability to combine several web services in order to fulfil a user-specific requirement. In dynamic environments, the appearance of several unforeseen events can destabilize the composite web service (CWS) and affect its quality. To deal with these issues, the composite web service must be dynamically reconfigured. Dynamic reconfiguration may be enhanced by avoiding the invocation of degraded web services by predicting QoS for the candidate web service. In this paper, we propose a dynamic reconfiguration method based on HMM (Hidden Markov Model) states to predict the imminent degradation in QoS and prevent the invocation of partner web services with degraded QoS values. PSO (Particle Swarm Optimization) and SFLA (Shuffled Frog Leaping Algorithm) are used to improve the prediction efficiency of HMM. Through extensive experiments on a real-world dataset, WS-Dream, the results demonstrate that the proposed approach can achieve better prediction accuracy. Moreover, we carried out a case study where we revealed that the proposed approach outperforms several state-of-the-art methods in terms of execution time.
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Keywords:
web service; dynamic reconfiguration; CWS; HMM; QoS prediction; SFLA; PSO
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MDPI and ACS Style
Messiaid, A.; Mokhati, F.; Benaboud, R.; Salem, H. Towards Dynamic Reconfiguration of a Composite Web Service: An Approach Based on QoS Prediction. Electronics 2021, 10, 1597. https://doi.org/10.3390/electronics10131597
AMA Style
Messiaid A, Mokhati F, Benaboud R, Salem H. Towards Dynamic Reconfiguration of a Composite Web Service: An Approach Based on QoS Prediction. Electronics. 2021; 10(13):1597. https://doi.org/10.3390/electronics10131597
Chicago/Turabian StyleMessiaid, Abdessalam, Farid Mokhati, Rohallah Benaboud, and Hajer Salem. 2021. "Towards Dynamic Reconfiguration of a Composite Web Service: An Approach Based on QoS Prediction" Electronics 10, no. 13: 1597. https://doi.org/10.3390/electronics10131597
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