QOS Based Web Service Composition for SelectionUsing Improved Gravitational Search Algorithm

摘要

With the drastic increase in the availability of functionally similar web services, the users take theherculean task of selecting the apt service that suits his needs. The services are although functionally similar,they differ with respect to their non functional parameters, in the name of Quality of Service (QoS). But still,dynamic optimal selection of services can be made possible by getting user preferences and by the use ofcomputational intelligence techniques. QoS are analyzed and it is designed at the middleware to implement webservice selection and composition. In this study, Improved Gravitational Search Algorithm (IGSA) is proposedto solve dynamic consumer needs and various QoS parameters are considered for composition of services. Theresults indicate that the proposed method shows improvement when compared with other methodologies suchas Hybrid Intelligent Water Drops (HIWD) algorithm and Gravitational Search Algorithm (GSA).