Seite - 357 - in Intelligent Environments 2019 - Workshop Proceedings of the 15th International Conference on Intelligent Environments

AHPandTOPSISMethods forWeb ServiceSelection HoucineBELOUAARa,1,OkbaKAZARb andNadiaKABACHIc aComputer sciencedepartment,LINFILaboratory,BiskraUniversity,Algeria, houcine.belouaar@univ-biskra.dz bComputer sciencedepartment,LINFILaboratory,BiskraUniversity,Algeria, kazarokba@gmail.com cComputer sciencedepartment,ERICLaboratory,Lyon1University,France, nadia.kabachi@univ-lyon1.fr Abstract.With the increasing number ofweb services on the internet, the task of selecting the best service from a list of similar web services has become a very delicate task for the service client.In this paper, Analytic Hierarchy Process and Technique forOrder ofPreferencebySimilarity to Ideal Solution (AHP-TOPSIS) methodsarecombinedforselectingthebestserviceamongseveralsimilarservices. Ourapproach is composedof twomain steps, i)weuse theAHPmethod toassign weights to each non-functional property that qualifies aWeb service. ii)We use theseweights to rank the list of the similar services inorder to select thebest one. For ranking serviceswe use the TOPSISmethod.We implemented our approach as a distributed solution based on a set of Agents that interact together in order to obtain the best desired service as fast as possible. The use ofAgent allows to improve the efficiencyof the proposed approach.Todemonstrate the applicability of our approachwe have used a set of real services related to SMS sending. The obtained results shows theefficiencyofourapproach. Keywords.WebService Selection,QoS,AHP,TOPSIS, ServiceRanking,Multi- AgentSystem. 1. Introduction Nowadays,Web services have become indispensable in almost every field. They con- stitute a category of web solutions used in industries, such as banking, shopping, and communications. They can be described simply as any service offered on theWeb. For example, in aweatherweb application, a user fills the city name, thewebsite sends the weather forecast for that cityas response. Web services are themost appropriate technologies for implementing the Service OrientedArchitecture (SOA).SOAisanarchitectural style forbuildingservice-oriented solutions[1]. It is composedof threeparticipants[2]: i) ServiceProviderwhichdevelops theservicesandmakesthemavailableontheInternetforusers. ii)ServiceRegistry: it isa centralizedlocationinwhichtheinterfacesof theservicesarepublishedbytheproviders. 1Houcine Belouaar: Computer science department, LINFI Laboratory, Biskra University, Algeria; Email:houcine.belouaar@univ-biskra.dz Intelligent Environments 2019 A. Muñoz et al. (Eds.) © 2019 The authors and IOS Press. This article is published online with Open Access by IOS Press and distributed under the terms of the Creative Commons Attribution Non-Commercial License 4.0 (CC BY-NC 4.0). doi:10.3233/AISE190066 357