文章基本信息

标题：FLEXIBLE SHARING IN DHT-BASED P2P NETWORKS USING METADATA OF RESOURCE
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作者：GUO-YING WANG ; ZHENG HUA
期刊名称：Journal of Theoretical and Applied Information Technology
印刷版ISSN：1992-8645
电子版ISSN：1817-3195
出版年度：2013
卷号：48
期号：3
出版社：Journal of Theoretical and Applied
摘要：DHT-based P2P systems have the ability to map a resource�s identifier to its location, so a resource can be located by the unique identifier of the resource. In such systems users must know the identifier of a resource exactly to find the resource. However, a resource can not be described accurately and integrally only by an identifier for the variety and complexity of resources, and needs multiple properties, i.e. metadata, are needed. In this paper, we proposed a flexible sharing method for DHT-based P2P networks using the metadata of resources. In this method, inverted indexes are constructed with multiple properties of resources, hashed and placed into proper nodes based on DHT when publishing resources; multiple properties are given by users and hashed to corresponding nodes using DHT, then matched inverted indexes are collected together and joined when searching for resources. Some extra technologies such as synonyms library, combined properties and virtual nodes are also used in our method to improve the sharing flexibility and performance. We also implemented a prototype system of our sharing method, MP3Share, using which we evaluated the performance improvement of combined properties. To improve the efficiency of the whole system, we should using synonyms library and combined properties technologies during the publishing procedure other than the searching procedure.
关键词：Resource Sharing; Metadata; Distributed Hash Table (DHT); Peer-to-Peer (P2P)