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MathPHP
Functions
Special
sigmoid
MathPHP\Functions\Special::sigmoid PHP Method
Special Class Documentation
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sigmoid()
public
static
method
Often, sigmoid function refers to the special case of the logistic function https://en.wikipedia.org/wiki/Sigmoid_function 1 S(t) = ------- 1 + ℯ⁻ᵗ
public
static
sigmoid
(
number
$t
) :
float
$t
number
return
float
public static function sigmoid($t) { $ℯ⁻ᵗ = exp(-$t); return 1 / (1 + $ℯ⁻ᵗ); }
Special
beta
complementaryErrorFunction
confluentHypergeometric
erf
erfc
errorFunction
gamma
gammaLanczos
gammaStirling
generalizedHypergeometric
hypergeometric
iBetaCF
incompleteBeta
logistic
lowerIncompleteGamma
regularizedIncompleteBeta
sgn
sigmoid
signum
softmax
upperIncompleteGamma
Γ
γ