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    Please use this identifier to cite or link to this item: http://asiair.asia.edu.tw/ir/handle/310904400/18935


    Title: A two-phased approach to retrieving learning content in peer-to-peer grids
    Authors: 時文中;Shih, Wen-Chung;曾憲雄;Tseng, Shian-Shyong
    Contributors: 資訊多媒體應用學系
    Keywords: Learning content retrieval;e-Learning;P2P Grids;Availability;Trustworthiness
    Date: 2009-04
    Issue Date: 2012-11-26 15:10:57 (UTC+8)
    Abstract: P2P (peer-to-peer) teaching material sharing
    environments can avoid redundant efforts, and alleviate
    limitations resulting from centralized management and clientserver
    modeling. However, the issues of availability and
    trustworthiness have to be considered in teaching material
    retrieval process, in order to improve the retrieval
    performance. Current peer-to-peer file sharing applications
    focus on exact matching and ignore the dynamic nature
    inherent in peer-to-peer networks, which might degrade the
    retrieval performance in terms of recall and response time.
    Our idea is to appropriately set the due time to improve
    response time of peer-to-peer teaching material retrieval
    without sacrificing much recall. The proposed approach
    consists of two phases: construction phase and sharing phase.
    In construction phase, peer information is acquired and
    managed in a decentralized manner. In sharing phase, the due
    time is interactively determined and the results are retrieved.
    A prototype system has been developed and experiments have
    been conducted to evaluate the performance of the approach.
    The experimental results show that the interactive algorithm
    performs well in peer-to-peer grids with low trust and
    availability.
    Relation: International Conference on Education Technology and Computer, ICETC 2009
    Appears in Collections:[行動商務與多媒體應用學系] 期刊論文

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