Sigmoid function

Noun

Definitions

1.NounAny of various real functions whose graph resembles an elongated letter "S"; specifically, the logistic function y = e x e x + 1 = 1 1 + e − x {\displaystyle y={\frac {e^{x}}{e^{x}+1}}={\frac {1}{1+e^{-x}}}} .

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