Based on the outcome of analysis, an original class rate is then defined and is used to decide whet hen the gray prediction model GM(1,1) is utilized to be adopted.

• 因此，本论文将分析模型GM(1,1)的数学结构，且基于分析后所得到结果，因而定义出原级比值来作为使用灰色预测模型GM(1,1)的判断依据。