COOPERATIVE SELF-COMPOSITION AND DISCOVERY OF GRID SERVICES IN P2P NETWORKS

The desirable global scalability of Grid systems has steered the research towards theemployment of the peer-to-peer (P2P) paradigm for the development of new resourcediscovery systems. As Grid systems mature, the requirements for such a mechanismhave grown from simply locating the desired service to compose more than one serviceto achieve a goal. In Semantic Grid, resource discovery systems should also be able toautomatically construct any desired service if it is not already present in the system, byusing other, already existing services. In this paper, we present a novel system for theautomatic discovery and composition of services, based on the P2P paradigm, having inmind (but not limited to) a Grid environment for the application. The paper improvescomposition and discovery by exploiting a novel network partitioning scheme for thedecoupling of services that belong to different domains and an ant-inspired algorithmthat places co-used services in neighbouring peers.