| 基于信誉和风险评估的动态信任模型研究 |
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| 引用本文： | 王樱,范双南,王静.基于信誉和风险评估的动态信任模型研究[J].计算机时代,2011(9):22-24. |
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| 作者姓名： | 王樱 范双南 王静 |
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| 作者单位： | [1]湖南科技经贸职业学院,湖南衡阳421001 [2]衡阳师范学院计算机科学系,湖南衡阳421001 |
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| 基金项目： | 基金项目：湖南省教育厅项目（IOC0175）;衡阳市科技局项目（2010KJ23） |
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| 摘 要： | 网格环境中的信任问题是网格计算发展过程中必须解决的一个重要问题。网格节点间的行为信任具有动态性和不确定性。文章综合考虑了信任度评估的动态性和风险性，提出一种新的基于信誉和风险评估的动态信任模型。该模型引入惩罚机制、风险机制和推荐节点信任度更新机制，以评估信任关系的复杂性。仿真结果表明，该模型在有效抑制恶意节点上较已有模型有一定的改进。
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| 关 键 词： | 信誉 风险评估 动态信任模型 恶意节点 |
Research on Dynamic Trust Model Based on Reputation and Risk Evaluation |
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| WANG Ying,FAN Shuang-nan,WANG Jing.Research on Dynamic Trust Model Based on Reputation and Risk Evaluation[J].Computer Era,2011(9):22-24. |
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| Authors: | WANG Ying FAN Shuang-nan WANG Jing |
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| Affiliation: | 1. Hunan Science and Technology Economy Trade Vocational College, Hengyang, Hunan 421001, China; 2. Dept. of Computer Science, Hengyang Normal University) |
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| Abstract: | The trust in a grid environment is an important problem in the development of grid computing. The behavior trust among grid nodes is dynamic and uncertain. Comprehensively considering the uncertainty and risk of trust degree evaluation, we propose a novel dynamic trust model based on reputation and risk evaluation. The model introduces the mechanisms, including punishment, risk and updating the trust degree of recommenders, to evaluate the complexity of trust relations. The simulation results show that the model outperforms the existing models in restraining malicious nodes. |
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| Keywords: | reputation risk evaluation dynamic trust model malicious nodes |
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