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Title: Information retrieval in schema-based P2P systems using one-dimensional semantic space
Authors: Gu, T.
Pung, H.K. 
Zhang, D.
Keywords: Ontology
Schema-based peer-to-peer overlay network
Semantic peer-to-peer network
Issue Date: 2007
Citation: Gu, T., Pung, H.K., Zhang, D. (2007). Information retrieval in schema-based P2P systems using one-dimensional semantic space. Computer Networks 51 (16) : 4543-4560. ScholarBank@NUS Repository.
Abstract: The widespread use of RDF-based information necessitates efficient information retrieval techniques in wide-area networks. In this paper, we 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. A search or a subscription request is only routed to the appropriate cluster that holds related data, thus reducing unnecessary search cost and increasing the efficiency of locating information. Through a comprehensive simulation study, we demonstrate the effectiveness of our proposed techniques. © 2007 Elsevier B.V. All rights reserved.
Source Title: Computer Networks
ISSN: 13891286
DOI: 10.1016/j.comnet.2007.06.019
Appears in Collections:Staff Publications

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