An Optimal Architecture for Dynamic Web Service Discovery and Selection

Abstract

The composition of a set of Web services is an important aspect of Web services technology. This allows solving several types of problems by combining available services elementary and ordering them to best meets the requirements of problems. Automatic composition gives us flexibility of selecting best candidate services at composition time satisfying QoS requirements; This would require the user to define constraints for selecting and composing candidate Web services. In this paper, we present QoS broker - based architecture for web services. From the model architecture which allows the management of QoS that we have previously proposed, we focus on how we can use web service with a technique supporting QoS under dynamic web service composition. The main goal of the architecture is to support the client in selecting web services based on his/her required QoS. We also present an efficient method to predict QoS of Web service and to select the suitable web service based on the consumer’s requirements along with QoS.