運算式 8: "y" equals left brace, 0 less than "x" less than 1 : left parenthesis, "m" "x" , right parenthesis times abs left parenthesis, "x" plus "c" , right parenthesis Superscript, "k" , Baseline plus "b" , right bracey=0<x<1:mx·absx+ck+b
8
Logistic
9
運算式 10: "y" equals left brace, 0 less than "x" less than 1 : "k" times StartFraction, 1 Over left parenthesis, 1 plus abs left parenthesis, 1000 times "m" , right parenthesis Superscript, left parenthesis, negative 1 times "x" plus "c" plus 0.5 , right parenthesis , Baseline , right parenthesis , EndFraction plus "b" , right bracey=0<x<1:k·11+abs1000·m−1·x+c+0.5+b
10
Logit
11
運算式 12: "y" equals left brace, 0 less than "x" less than 1 : negative log left parenthesis, StartFraction, 1 Over abs left parenthesis, "x" minus "c" , right parenthesis Superscript, "k" , Baseline , EndFraction minus 1 , right parenthesis times left parenthesis, 0.5 times "m" , right parenthesis plus 0.5 plus "b" , right bracey=0<x<1:−log1absx−ck−1·0.5·m+0.5+b
