Gamma exponential family distribution.
Parameters : | link : a link instance, optional
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Attributes
Gamma.link | a link instance | The link function of the Gamma instance |
Gamma.variance | varfunc instance | variance is an instance of statsmodels.family.varfuncs.mu_squared |
Methods
deviance(Y, mu[, scale]) | Gamma deviance function |
fitted(eta) | Fitted values based on linear predictors eta. |
loglike(Y, mu[, scale]) | Loglikelihood function for Gamma exponential family distribution. |
predict(mu) | Linear predictors based on given mu values. |
resid_anscombe(Y, mu) | The Anscombe residuals for Gamma exponential family distribution |
resid_dev(Y, mu[, scale]) | Gamma deviance residuals |
starting_mu(y) | Starting value for mu in the IRLS algorithm. |
weights(mu) | Weights for IRLS steps |