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PeerSearch: Efficient Information Retrieval in Peer- to-Peer Networks

Tang, Chunqiang; Xu, Zhichen; Mahalingam, Mallik


Keyword(s): peer-to-peer computing; information retrieval; overlay routing; search engine

Abstract: In this paper, we propose an efficient peer-to-peer information retrieval system PeerSearch that supports state-of-the-art content and semantic searches. PeerSearch avoids the scalability problem of existing systems that employ centralized indexing, index flooding, or query flooding. It also avoids the non- determinism that exhibited by heuristic-based approaches. PeerSearch achieves both efficiency and determinism through an elegant combination of index placement and query routing. Given a query, PeerSearch only needs to search a small number of nodes to identify matching documents.

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