Taking 18 sets of parameter data of underground mine as training and testing samples, the ratio of mis-discrimination is 0.
对18组地下矿山的特征参数值作为学习样本进行训练和检验，回判估计的误判率为0。
2
In Survey of Content Validity, 36 items were founded to be related to their dimensions respectively, but not to others, the achievement ratio of aggregation test and discrimination test was 100%.