PeerLearning: A Content-Based e-Learning Material Sharing System Based on P2P Network
PeerLearning: A Content-Based e-Learning Material Sharing System Based on P2P Network
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DOI：
10.1007/s11280-010-0086-0
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发表时间：
2010-03
期刊：
影响因子：
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通讯作者：
Guoren Wang;Ye Yuan;Yongjiao Sun;Junchang Xin;Y. Zhang
中科院分区：
文献类型：
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作者：
Guoren Wang;Ye Yuan;Yongjiao Sun;Junchang Xin;Y. Zhang
以内容为基础的方式管理和检索可重用的学习材料是e-Learning材料共享系统的一大挑战。电子学习材料是高度异构的;它们可能以视频、音频、图像、幻灯片或纯文本的形式存在。此外，在大量增加的多媒体材料的存在下，学习系统是高度动态的。P2P网络似乎是最有前途的基础设施之一，以应对这种高度动态的环境中的挑战。本文提出了一种基于trie树和deBruijn结构的P2P网络结构。它可以在高度动态的场景中有效地支持查询处理。此外，我们开发了一个P2P e-Learning系统PeerLearning，提供两个基于内容的学习材料共享服务：一个关键字搜索组件，支持基于内容的文档共享和基于内容的多媒体材料检索方法。在这项研究中进行了大量的实验，以验证我们的方法优于现有的作品。
Managing and retrieving reusable learning materials in a content-based way is a big challenge in e-Learning material sharing systems. E-Learning materials are highly heterogeneous; they may exist in the form of video, audio, image, slide or plain text. Furthermore, the learning systems are highly dynamic in the presence of massively increasing multimedia materials. P2P network seems to be one of the most promising infrastructures to deal with the challenge in such highly dynamic environments. In this paper we propose a Peer-to-Peer (P2P) infrastructure based on the trie tree and the deBruijn structure. It can support efficiently query processing in highly dynamic scenarios. Furthermore we develop a P2P e-Learning systemPeerLearningto provide two content-based learning material sharing services: a keyword search component for supporting content-based document sharing and a content-based retrieval method for multimedia materials. Extensive experiments are conducted in this study to verify the superiority of our methods over the existing works.