Web service selection on the basis of QoS parameter

In the present day situation, web service plays an important role in companies for sharing information. But due to the availability of large amount of web services that offer identical functionality, it is very difficult for the users to select the best service. This paper provides a model for efficiently selecting the web services among the set of existing web services. A web service negotiator has been used to verify the QoS information published by the publisher. A stability analyzer has been used to assign the stability score to the web service if it consistently provides a good service otherwise assign a low stability score to that web service. The ranking of the web service has been done using the AHP and TOPSIS. The highest ranked web services then given to the user to fulfill his requirements.