在综合分析国内外道路交通安全评价方法的基础上，建立了城市道路交通安全的灰色评价方法。
Based on the general analysis of evaluation methods both at home and abroad, the gray evaluation method of urban road traffic safety is established.
在路面使用性能评价方面，本文提出基于中心点三角白化权函数的灰色评价方法，其权重采用熵值法客观确定。
To evaluate the performance of the road, this paper proposes a method of gray evaluation based on center triangle whitening weight function, and the weight is determined by entropy objectivity.
本文通过对在线拍卖网站进行分析，建立了在线拍卖网站评价指标体系，提出了一种基于粗糙集的在线拍卖网站灰色评价方法。
By analysis of online auction website, index system of online auction website evaluation is established, and an evaluation method of online auction website based on rough sets is put forward.
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