These are dynamic group of individuals, groups or organizations who define the conditions and rules for sharing resources in a grid environment. In OGSA, resources are accessed through their service interface. Therefore, the term “resources” could be loosely abstracted to cover a wide range of concepts including physical resources individuals and their expertise, capabilities and frameworks. The resources provided by members of the VO for sharing form the components of the grid service ecosystem.
Published in Chapter:
Agent-Based Infrastructure for Dynamic Composition of Grid Services
Matthew Adigun (University of Zululand, South Africa), Johnson Iyilade (University of Zululand, South Africa), and Klaas Kabini (University of Zululand, South Africa)
Copyright: © 2010
|Pages: 26
DOI: 10.4018/978-1-61520-686-5.ch039
Abstract
The service-oriented computing paradigm is based on the assumption that existing services can be put together in order to obtain new composite services. This chapter focuses on how peer-to-peer architectures based on multi-agent systems can be used to build highly dynamic and reconfigurable infrastructure that support dynamic composition of grid services. The chapter starts by providing an overview of key technologies for SOC. It then introduces dynamic service composition and challenges of composing grid services. The authors further motivate for Multi-agent system approach in SOC and why it becomes important in service composition. They then present our research effort, AIDSEC, an agent-based infrastructure for dynamic service composition, describing its architecture, implementation and comparison with some related work in the literature. In addition, the chapter raises some emerging trends in SOC and the particular challenges they pose to service composition. They conclude by suggesting that a solution based on multi-agent system is required for composing services that possess capabilities of autonomy, reliability, flexibility, and robustness.