| 基于文件流行度的无结构P2P网络搜索机制 |
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| 引用本文： | 吴功宜,刘乾,王珺,杨阳,徐敬东.基于文件流行度的无结构P2P网络搜索机制[J].计算机工程,2009,35(12):84-86. |
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| 作者姓名： | 吴功宜 刘乾 王珺 杨阳 徐敬东 |
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| 作者单位： | 南开大学信息技术科学学院,天津,300071 |
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| 基金项目： | 天津市应用基础研究计划基金 |
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| 摘 要： | 针对无结构P2P文件共享系统对不同流行度的文件使用相同的搜索策略从而导致大量网络资源的浪费问题,在研究Gnutella协议的基础上,提出一种基于LogLog算法的文件流行度判定机制,将它与Expanding Ring算法结合,给出一种基于流行度的搜索机制。与Expanding Ring相比,该搜索机制在一定程度上减少网络开销和响应时间,特别是稀缺文件的响应时间。
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| 关 键 词： | 无结构P2P网络 洪泛 Expanding Ring算法 LogLog算法 |
| 修稿时间： | |
Searching Mechanism Based on File Popularity in Unstructured P2P Networks |
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| WU Gong-yi,LIU Qian,WANG Jun,YANG Yang,XU Jing-dong.Searching Mechanism Based on File Popularity in Unstructured P2P Networks[J].Computer Engineering,2009,35(12):84-86. |
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| Authors: | WU Gong-yi LIU Qian WANG Jun YANG Yang XU Jing-dong |
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| Affiliation: | College of Information Technical Science;Nankai University;Tianjin 300071 |
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| Abstract: | According to the problem that traditional unstructured P2P networks use the same searching mechanism for the files of different popularity,which consumes a large amount of network resources,this paper proposes a file popularity evaluating mechanism based on LogLog algorithm by researching Gnutella protocol,and combines it with Expanding Ring(ER) algorithm to present a new searching mechanism.Compared with Expanding Ring,this mechanism can reduce network overhead and response time,particularly the response t... |
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| Keywords: | unstructured P2P networks Flooding Expanding Ring(ER) algorithm LogLog algorithm |
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