基于变精度粗糙集的水泥企业盈利能力评价

Profitability evaluation of cement enterprises based on variable precision rough set

传统粗糙集分类要求苛刻和分类结果单调,既不能充分利用原有信息,也容易导致求出的属性指标的权重雷同。变精度粗糙集降低了分类的要求,不仅使分类更为丰富,而且更能充分利用原有信息,求得的属性指标权重一般不会雷同。运用变精度粗糙集和TOPSIS对我国部分上市水泥生产企业的盈利能力进行了评价。首先运用变精度粗糙集求出评价指标的权重,然后采用TOPSIS对评价对象的盈利能力进行评价.结果显示:求出7个评价指标的权重各不相同,比较符合实际,使评价结果更为客观。

Traditional rough set classification is demanding and monotonous, so it can not make full use of the original information, and it is easy to lead to the same weight of attribute index. Variable precision rough set reduces the requirements of classification. It not only makes the classification more abundant, but also makes full use of the original information. Generally, the weights of attribute indexes obtained are not the same.The variable precision rough set and TOPSIS are used to evaluate the profitability of some listed cement enterprises in China. Firstly, the variable precision rough set is used to calculate the weight of the evaluation index, and then TOPSIS is used to evaluate the profitability of the evaluation object. The results show that the weights of the seven evaluation indexes are different,which is more in line with the reality and makes the evaluation results more objective.