scikits.statsmodels.family.family.Poisson

class scikits.statsmodels.family.family.Poisson(link=<scikits.statsmodels.family.links.Log object at 0x032FF130>)

Poisson exponential family.

Parameters:

link : a link instance, optional

The default link for the Poisson family is the log link. Available links are log, identity, and sqrt. See statsmodels.family.links for more information.

See also

statsmodels.family.family.Family

Attributes

link Helper method to get the link for a family.
variance
valid (class attribute) list A list contained the domain for the Poisson family.

Methods

resid_dev(Y, mu[, scale]) Gaussian deviance residual
deviance(Y, mu[, scale]) Poisson deviance function
loglike(Y, mu[, scale]) Loglikelihood function for Poisson exponential family distribution.
resid_anscombe(Y, mu) Anscombe residuals for the Poisson exponential family distribution

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