计算机科学 ›› 2016, Vol. 43 ›› Issue (5): 140-145.doi: 10.11896/j.issn.1002-137X.2016.05.026
游静,冯辉,孙玉强
YOU Jing, FENG Hui and SUN Yu-qiang
摘要： “模糊、自治”的云计算环境中,服务品类繁多、质量参差不齐,用户主体难以进行可信赖的服务选择。在用户交互经验的基础上,结合现实人际交易模式,提出了一种基于协同推荐的综合信任量化评估模型。模型引入了时间衰减、权重两类动态因子,设计了多元化混合协同推荐算法来实现用户之间的有效协作,帮助用户正确选择可信云服务。为了验证模型的可行性,设计出一个分布式的原型系统,对模型的用户满意度和服务选择质量进行仿真实验。仿真结果表明,该模型能够更快地提高平均服务满意度,更有效地抑制恶意服务,而且随着交互次数的增长,服务选择质量也会不断提高。
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