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一种新的P2P网络资源定位模型仿真研究 被引量:3

Simulation Research of a New P2P Resources Location Model
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摘要 无线网络中P2P系统为资源定位速度和效率的关键技术,而资源定位模型中主要是资源的放置、定位和获取三个问题,对核心的问题是资源定位。新的研究内容是层次式定位模型。模型虽然解决了资源定位的速度问题,但是,模型存在重要缺陷,没有考试查询用户丰富和多样性需求。针对模型能快速定位资源结果,而资源结果却不丰富的问题,在该模型的基础上,引入语义邻居的思想,提出了HDNT_SN模型,结果表明模型既能实现资源的快速查询、定位,又能为用户返回丰富的查询结果,证明了HDHT_SN在查询结果的召回率和查询成功率方面,性能明显优于单纯的层次式资源定位模型,它能有效改善P2P系统的整体性能。 In P2P system,a resources location model is one of the key technologies which will affect the speed and efficiency of resources location. In the research of P2P system,we mainly study the following issues,namely resources allocation,resources location and resources access. One of the most cores is resources location. The latest model is HDHT,namely Hierarchical Distributed Hash Table. This model has the advantage of quick query. However,the model cannot meet user's needs for rich and diversified query results. Whether model can meet user's need is an important aspect to a good model. This paper proposes a novel model named HDHT_SN based HDHT and Semantic Neighbor. Our experiments show that user can get fast and rich query results than HDHT model,and improving the overall system performance of P2P system.
作者 徐坚
出处 《计算机仿真》 CSCD 北大核心 2010年第9期132-135,共4页 Computer Simulation
关键词 哈希表 对等网络 语义邻居 资源定位 HDHT_SN Peer to peer network Semantic neighbor Resources location
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