statsmodels.genmod.families.family.Gamma.deviance
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Gamma.deviance(endog, mu, scale=1.0)
[source] -
Gamma deviance function
Parameters: endog : array-like
Endogenous response variable
mu : array-like
Fitted mean response variable
scale : float, optional
An optional scale argument
Returns: deviance : float
Deviance function as defined below
Notes
deviance
= 2*sum((endog - mu)/mu - log(endog/mu))
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