中文摘要：

提出了改进的关联度加权灰色关联分析模型和数据无量纲化灰色关联分析模型.结合煤矿百万吨死亡率指标,给出了改进的关联度加权灰色关联分析模型在该应用下的加权系数的选择,增强了灰色关联分析的灵活性,体现了各影响因素对煤矿百万吨死亡率的差别.通过仿真实验,验证了所提方法的有效性和正确性.

英文摘要：

An improved weighted incidence degree gray relational analysis model and an improved data non--dimensional gray relational analysis model are proposed based on the theory of gray relational analysis. Improved weighted incidence degree gray relational analysis model is applied in prediction of death rate per million--ton coal and the selecting method for weighting coefficients is also given. Through the application of this model, the flexibility of gray relational analysis is enhanced and the disparate impacts of different factors on death rate per million--ton coal are also shown. The validity and correctness of the proposed method are verified through the simulation experiment.