Trust has become a major issue for e-shopping platforms, and such "comments after you buy" were initiated to establish an evaluation system to gain customers' confidence.
对于网购平台，信任是很重要的。购买后的评价最先建立了一个能够得到顾客信任的评价体系。
Generally speaking, trust derives from direct trust and reputation, and the reputation system is the mechanism to support trust evaluation.
信任通常来源于直接信任和信誉两种途径，信誉系统是用于支持信任评价的机制。
Through multilayer grouping strategy, using group trust degree, global trust degree and individual evaluation system, a new algorithm based on global trust degree model was put forward.
通过多层分组策略，利用组中信任度、全局信任度和个人评价制度，提出基于全局信任度模型的新算法。
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