Open Access

表2

变量离散化结果

类别 符号 取值范围 编码
目标变量 M ≤1y30 1
>1y30 2
N ≤94.25 1
>94.25 2
P ≤1y71 1
>1y71 2
Q ≤96.25 1
>96.25 2
属性变量 a [0.026 238 0, 0.026 477 4] 1
[0.026 479 9, 0.026 626 4] 2
[0.026 631 6, 0.026 754 8] 3
[0.026 761 9, 0.027 046 4] 4
b [0.087 270 8, 0.087 992 7] 1
[0.088 018 5, 0.088 435 3] 2
[0.088 444 3, 0.088 831 4] 3
[0.088 856 0, 0.089 487 6] 4
c [-4, -2.36] 1
[-2.27, -0.79] 2
[-0.77, 0.54] 3
[0.58, 2] 4

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