Abstract
Recently published studies have shown that Latent Semantic Indexing (LSI) plays an important role in content-based full text information retrieval of P2P system. However, it is a challenging problem to generate global consistent LSI structures in P2P systems because their nodes are self-organizing and their corpora are large, dynamic and distributed on different nodes. In this paper we propose a method for building LSI structures from distributed corpora. Our method is consisted with a network model for semantic information sampling and exchanging and a Reduced-Dimension-Representation (RDR)s merging algorithm. By the signal and noise subspace model, we also provide a theoretical justification that the RDR merging algorithm is sound. A simple numerical experiment shows that our RDR merging algorithm can keep query precision on an acceptable level.
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Zhang, S., Wu, G., Chen, G., Xu, L. (2005). On Building and Updating Distributed LSI for P2P Systems. In: Chen, G., Pan, Y., Guo, M., Lu, J. (eds) Parallel and Distributed Processing and Applications - ISPA 2005 Workshops. ISPA 2005. Lecture Notes in Computer Science, vol 3759. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11576259_2
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DOI: https://doi.org/10.1007/11576259_2
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-29770-3
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