| 基于人工免疫的P2P文件共享防污染系统 |
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| 引用本文： | 韦冬,杨寿保,纪雯,路卫娜.基于人工免疫的P2P文件共享防污染系统[J].中国科学院研究生院学报,2007,24(6):794-800. |
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| 作者姓名： | 韦冬 杨寿保 纪雯 路卫娜 |
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| 作者单位： | 中国科学技术大学计算机科学与技术系,合肥,230026 |
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| 基金项目： | 国家自然科学基金;国家高技术研究发展计划(863计划) |
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| 摘 要： | 文件污染是当前P2P文件共享系统普遍存在的问题，极大的降低了系统的可用性。P2P文件共享系统和生物免疫系统一样，都是高度分布、自适应和自组织的。利用向量空间相似度赋予投票权重，采用自适应的信誉阈值判断文件可信性，建立了基于人工免疫的防污染对象信誉机制来进行邻居节点集的选取，以改进系统可用性。仿真实验表明，系统具有很高的识别精确度，能够以低通讯代价很好的抑制污染文件在网络中的传播。
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| 关 键 词： | 污染 人工免疫系统 可用性 文件共享 P2P |
| 文章编号： | 1002-1175(2007)06-0794-07 |
| 修稿时间： | 2007年1月17日 |
Artificial immunology based anti-pollution P2P file sharing system |
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| WEI Dong,YANG Shou-Bao,JI Wen,LU Wei-Na.Artificial immunology based anti-pollution P2P file sharing system[J].Journal of the Graduate School of the Chinese Academy of Sciences,2007,24(6):794-800. |
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| Authors: | WEI Dong YANG Shou-Bao JI Wen LU Wei-Na |
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| Institution: | Department of Computer Science and Technology, University of Science and Technology of China |
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| Abstract: | The problem of file pollution is prevalent in the P2P file sharing system nowadays.The pollution reduces the availability of the system sharply.Like the natural immune system,the P2P file sharing system is also highly distributive,self-adaptive and self-organized.Vector space similarity is computed to weight the votes collected from other peers.Self-adaptive reputation threshold scheme is adopted to estimate the file authenticity.Artificial immunology based anti-pollution object reputation mechanism is established to select the neighbor peer set and improve the system availability.Simulation results show that the system can distinguish between good and polluted files accurately and,with low communication cost thwart the proliferation of pollution in the network. |
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| Keywords: | P2P |
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