scikits.statsmodels.discretemod.Logit.pdf

Logit.pdf(X)

The logistic probability density function

Parameters:

X : array-like

X is the linear predictor of the logit model. See notes.

Returns:

np.exp(-x)/(1+np.exp(-X))**2 :

Notes

In the logit model,

\lambda\left(x^{\prime}\beta\right)=\frac{e^{-x^{\prime}\beta}}{\left(1+e^{-x^{\prime}\beta}\right)^{2}}

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