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    An ontology based local index in P2P networks

    , Article 2006 2nd International Conference on Semantics Knowledge and Grid, SKG, Guilin Guangxi, 1 November 2006 through 3 November 2006 ; 2006 , Pages 11-16 ; 0769532055 (ISBN); 9780769532059 (ISBN) Rostami, H ; Habibi, J ; Abolhassani, H ; Amirkhani, M ; Rahnama, A ; Sharif University of Technology
    Institute of Electrical and Electronics Engineers Inc  2006
    Abstract
    Peer-to-peer networks (P2P) are beginning to form the infrastructure of future applications. One of the problems with unstructured P2P networks is their scalability limitation. This is also the problem in structured P2P networks that use broadcasting to find objects. These networks can't contain a large number of nodes because of the large amount of traffic that they have to handle. Local indexing is a method to reduce this traffic. But local indexes tend to become large with the growth of the network. Also limiting the size of these indexes causes loss of indexing information. In this paper we introduce a novel ontology based local index which limits the size of the local indexes without... 

    Semantic routing of search queries in P2P networks

    , Article Journal of Parallel and Distributed Computing ; Volume 68, Issue 12 , 2008 , Pages 1590-1602 ; 07437315 (ISSN) Rostami, H ; Habibi, J ; Livani, E ; Sharif University of Technology
    2008
    Abstract
    Peer-to-peer (P2P) networks are beginning to form the infrastructure of future applications. Heavy network traffic limits the scalability of P2P networks. Indexing is a method to reduce this traffic. But indexes tend to become large with the growth of the network. Also, limiting the size of these indexes causes loss of indexing information. In this paper we introduce a novel ontology based index (OI) which limits the size of the indexes without sacrificing indexing information. We show that the method can be employed by many P2P networks. The OI sits on top of routing and maintenance modules of a P2P network and enhances it. The OI prunes branches of search trees which have no chance to...