Semantic overlay network for grid resource discovery

This paper presents a new approach to grid-resource discovery by using semantic peer-to-peer (P2P) overlays. The framework is based on the RDF metadata infrastructure, allowing a rich and extensible description of resources and queries. To avoid flooding the network with a query, we propose a comprehensive semantics-based query forwarding strategy, which only forwards queries to semantically related nodes. After the related nodes have been located, the original RDF query is used to do the final query and retrieval. Results from simulation experiments demonstrate that this architecture is scalable and efficient.