Information Retrieval in Schema-Based P2P Systems Using One-Dimensional Semantic Space

The widespread use of RDF-based information necessitates efficient information retrieval techniques in wide-area networks. In this paper, the authors present Dynamic Semantic Space, a schema-based peer-to-peer overlay network that facilitates efficient lookup for RDF-based information in dynamic environments. Peers in this overlay are grouped based on the semantics of their data which are extracted according to a set of schemas, and self-organized as a semantic overlay network. To reduce overheads incurred by peer joining, leaving and content changes in a high-dimensional overlay network, peers are constructed as a one-dimensional semantic space that facilitates efficient routing for both pull and push requests.