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statsmodels.genmod.families.family.Family.loglike

Family.loglike(endog, mu, scale=1.0)[source]

The loglikelihood function.

Parameters:

`endog` : array

Usually the endogenous response variable.

`mu` : array

Usually but not always the fitted mean response variable.

Returns:

llf : float

The value of the loglikelihood evaluated at (endog,mu).

Notes :

—– :

This is defined for each family. endog and mu are not restricted to :

`endog` and `mu` respectively. For instance, the deviance function :

calls both loglike(endog,endog) and loglike(endog,mu) to get the :

likelihood ratio. :

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