class statsmodels.genmod.families.links.nbinom(alpha=1.0)
[source]
The negative binomial link function.
g(p) = log(p/(p + 1/alpha))
nbinom is an alias of NegativeBinomial. nbinom = NegativeBinomial(alpha=1.)
deriv (p) | Derivative of the negative binomial transform |
deriv2 (p) | Second derivative of the negative binomial link function. |
inverse (z) | Inverse of the negative binomial transform |
inverse_deriv (z) | Derivative of the inverse of the negative binomial transform |
© 2009–2012 Statsmodels Developers
© 2006–2008 Scipy Developers
© 2006 Jonathan E. Taylor
Licensed under the 3-clause BSD License.
http://www.statsmodels.org/stable/generated/statsmodels.genmod.families.links.nbinom.html