statsmodels.genmod.families.family.Family

class statsmodels.genmod.families.family.Family(link, variance)[source]

The parent class for one-parameter exponential families.

Parameters
linka link function instance

Link is the linear transformation function. See the individual families for available links.

variancea variance function

Measures the variance as a function of the mean probabilities. See the individual families for the default variance function.

See also

Link Functions

Further details on links.

Attributes
link

Link function for family

Methods

deviance(endog, mu[, var_weights, ...])

The deviance function evaluated at (endog, mu, var_weights, freq_weights, scale) for the distribution.

fitted(lin_pred)

Fitted values based on linear predictors lin_pred.

loglike(endog, mu[, var_weights, ...])

The log-likelihood function in terms of the fitted mean response.

loglike_obs(endog, mu[, var_weights, scale])

The log-likelihood function for each observation in terms of the fitted mean response for the distribution.

predict(mu)

Linear predictors based on given mu values.

resid_anscombe(endog, mu[, var_weights, scale])

The Anscombe residuals

resid_dev(endog, mu[, var_weights, scale])

The deviance residuals

starting_mu(y)

Starting value for mu in the IRLS algorithm.

weights(mu)

Weights for IRLS steps

Properties

link

Link function for family

links

valid