Poisson deviance function
Y : array-like
Endogenous response variable
mu : array-like
Fitted mean response variable
scale : float, optional
An optional scale argument
deviance : float
The deviance function at (Y,mu) as defined below.
Notes
If a constant term is included it is defined as
deviance = 2*\sum_{i}(Y*\log(Y/\mu))
statsmodels.genmod.families.family.Poisson
statsmodels.genmod.families.family.Poisson.fitted
Enter search terms or a module, class or function name.