In this paper,two new relative efficiency are given in signular G-M model. The first is based on the ratio of the minimum of the characteristic roots from two different matrix. The second is defined by the generalizered Euclid norm.

• 在奇异线性模型下利用2个矩阵特征根比值的最小值推广了Euclid范数定义的2种相对效率.