An approach to web service selection based on composite QOS parameters

• Autorzy: Kheradmand M , Motameni H

Identyfikatory

DOI

10.12913/22998624/2379

• Języki publikacji: EN

Abstrakty

EN

Quality of service (QoS) is an important attribute for selecting a service during the service composition process. Although availability and reliability have been considered as the predominant factors for estimating reputation, two aspects are missing in the literature. First, their use is limited to composite service level and does not count on the atomic level. Second, their combined effect is not evaluated. Better estimation of QoS can be done with both factors considered together, whereas when taken separately for computing reputation, availability will give the probability of a service being up/running and reliability will analyze the change in failure trend of that service. In this research, a mathematical modeling of predominant QoS factors, availability and reliability of atomic services using Markov Chain model and Weibull analysis respectively, are suggested. Also importance of modeling reputation as an aggregation of availability and reliability has been explained. This research concludes two results. First, counting on probability of a service being up/running and its failure trend, together, results in a better estimation of its behavior and helps selecting the most appropriate one. Second, this resulted in selection of a service with higher reputation but lower usage cost, as opposed to using a single factor that resulted in higher reputation with higher cost.

Słowa kluczowe

EN

web service; web service selection; quality of service; QoS composition; service reputation

• Wydawca: Lublin University of Technology ; Polish Society of Ecological Engineering (PTIE), Branch of PTIE in Lublin
• Czasopismo: Advances in Science and Technology. Research Journal
• Rocznik: 2015
• Tom: Vol. 9, nr 26
• Strony: 129--136
• Opis fizyczny: Bibliogr. 29 poz., fig., tab.

Twórcy

autor

Kheradmand M

• Student, Sari Branch, Islamic Azad University, Sari, Iran

autor

Motameni H

• Sari Branch, Islamic Azad University, Sari, Iran

Bibliografia

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