Service Composition Life-cycle Research Articles

An integrated approach towards service composition life cycle: A transportation process case study

Abstract In Web Service research, providing methods and tools to cater for automatic composition of services on the Web is still the object of ongoing research activity. Despite the proposed approaches, this issue remains open. Our current contribution deals with this topic and presents a Dynamic Web Service Composition Framework (DWSC). The DWSC behavior is based mainly on two components: service dynamic designer (WSDD) and service selection based on popularity (WSSP) to propose a composite service. The DWSC architecture, designed to automatically compose services based on popularity, has the advantage of proposing a list of suggested web services according the user request from a service repository and presenting a dynamic orchestration based on the selected web services. Further, we present a practical case study according the transportation process on supply chain, examples and experimental results that demonstrate the feasibility and effectiveness of our work.

Web Service Negotiation Model Based on Cooperative Game Theory

In the service composition life cycle, the target between service requester and service provider is quite different, which will cause the Web service SLA negotiation problem. The implementation of Web service relies on the interaction between the service provider and the service requester. In this article, the game model of Web Service negotiation process is proposed and solutions of the multi-participant and dynamic game model are gave. Then, we obtained the effective method of SLA generation. Experiments show that our method will ensure the common interests both service requesters and service providers.

Towards runtime discovery, selection and composition of semantic services

Service-orientation is gaining momentum in distributed software applications, mainly because it facilitates interoperability and allows application designers to abstract from underlying implementation technologies. Service composition has been acknowledged as a promising approach to create composite services that are capable of supporting service user needs, possibly by personalising the service delivery through the use of context information or user preferences. In this paper we discuss the challenges of automatic service composition, and present DynamiCoS, which is a novel framework that aims at supporting service composition on-demand and at runtime for the benefit of service end-users. We define the DynamiCoS framework based on a service composition life-cycle. Framework mechanisms are introduced to tackle each of the phases and requirements of this life-cycle. Semantic services are used in our framework to enable reasoning on the service requests issued by end-users, making it possible to automate service discovery, selection and composition. We validate our framework with a prototype that we have built in order to experiment with the mechanisms we have designed. The prototype was evaluated in a testing environment using some use case scenarios. The results of our evaluation give evidences of the feasibility of our approach to support runtime service composition. We also show the benefits of semantic-based frameworks for service composition, particularly for end-users who will be able to have more control on the service composition process.