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A Two-phased Approach to Retrieving Learning Content in Peer-to-Peer Grids

机译：一种双相位方法，可以在点对点网格中检索学习内容

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摘要

P2P (peer-to-peer) teaching material sharing environments can avoid redundant efforts, and alleviate limitations resulting from centralized management and client-server 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.
机译：P2P（对等）教学材料共享环境可以避免冗余工作，并减轻集中管理和客户端 - 服务器建模所产生的限制。然而，必须考虑在教学检索过程中考虑可用性和可信度的问题，以提高检索性能。当前的点对点文件共享应用程序集中在精确匹配和忽略对等网络中固有的动态性质，这可能会降低回忆和响应时间的检索性能。我们的想法是适当地设定适当的时间来改善点对点教学材料检索的响应时间，而不会牺牲很多召回。建议的方法包括两个阶段：施工阶段和共享阶段。在施工阶段，以分散的方式获取和管理对等信息。在共享阶段，互动时间是相互作用的，并且检索结果。已经开发了原型系统，并进行了实验以评估方法的性能。实验结果表明，交互式算法在低对等网格中对具有低信任和可用性的对等网格进行了良好。

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