| 基于P2P网络的动态模糊综合信任模型 |
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| 引用本文： | 饶屾,王勇.基于P2P网络的动态模糊综合信任模型[J].计算机应用,2011,31(1):139-142. |
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| 作者姓名： | 饶屾 王勇 |
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| 作者单位： | 桂林电子科技大学 |
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| 摘 要： | 针对现有的P2P网络信任模型在聚合节点信任值时对节点行为的差异性与动态性考虑不足，提出了一种动态的模糊综合信任模型——DFCTrust，即在静态模糊综合评价的基础上加入时间衰减因子及波动惩罚因子。首先，该模型通过静态模糊综合评价的方法来计算每次交易的满意度得分，由于在计算过程中加入了交易上下文的评价因素，所以可以很好地避免恶意节点在小交易上诚信在大交易上欺骗的恶意行为；其次，在综合计算节点信任度时，引入了时间衰减因子和波动惩罚因子，这样不仅可以避免与不活跃节点交易所造成的失败，而且还可以有效地抵御节点采用周期性振荡欺骗的恶意行为。仿真实验表明，DFCTrust具有更好的动态适应能力，能够有效地处理动态恶意节点策略性的行为改变，从而提高交易的成功率。
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| 关 键 词： | 对等网络 动态综合评价 信任模型 模糊综合评价 |
| 收稿时间： | 2010-06-28 |
| 修稿时间： | 2010-08-15 |
Dynamic fuzzy comprehensive trust model based on P2P network |
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| RAO Shen,WANG Yong.Dynamic fuzzy comprehensive trust model based on P2P network[J].journal of Computer Applications,2011,31(1):139-142. |
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| Authors: | RAO Shen WANG Yong |
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| Affiliation: | RAO Shen,WANG Yong(College of Computer and Control,Guilin University of Electronic Technology,Guilin Guangxi 541004,China) |
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| Abstract: | According to the deficiency of trust model employed by the existing P2P network,which inadequately considers the difference and the dynamic in peers' behavior when aggregating the peer trust,a new dynamic fuzzy comprehensive trust model(DFCTrust) was proposed in this paper;in other words,the time attemiation factor and the fluctuation punisive measure were added on the basis of static fuzzy comprehensive evaluation.In the model,the satisfactory degree of every transction was firstly computed by static fuzzy... |
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| Keywords: | Peer-to-Peer(P2P) network dynamic comprehensive evaluation trust model fuzzy comprehensive trust network security |
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