计算机科学 ›› 2015, Vol. 42 ›› Issue (1): 113-118.doi: 10.11896/j.issn.1002-137X.2015.01.027
陈卫东,李敏强,赵庆展
CHEN Wei-dong, LI Min-qiang and ZHAO Qing-zhan
摘要： 为了适应互联网服务资源“成长、自治”的自然特征,以基于P2P技术的电子商务供应链等为代表的自组织系统的实践表现出巨大潜力,但自组织系统的动态开放等固有特征使其面临严重的行为可信问题。提出了一种P2P环境的基于反馈的Web服务选择信任模型。基于用户对服务的评价,利用局部信誉及全局信誉基本数据,综合考虑时间等因素,结合k-mean聚类算法分类比较用户的服务评价与第三方评价、历史评价等,建立了基于信誉的信任系统。设计了服务的可信模型与评价者的可信模型,并根据不同情况使用适当处罚函数,得到Web services使用的信誉评价模型。通过实验分析发现P2P环境下的基于信誉的信任系统为企业应用提供了自组织服务管理的基础,同时信誉评价模型为用户选择服务提供了科学可靠的依据。系统对恶意用户的使用有一定的对抗能力,能保证P2P环境下服务的可持续运营。
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