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statsmodels.discrete.discrete_model.Poisson.loglikeobs

Poisson.loglikeobs(params) [source]

Loglikelihood for observations of Poisson model

Parameters: params (array-like) – The parameters of the model.
Returns: loglike – The log likelihood for each observation of the model evaluated at params. See Notes
Return type: array-like

Notes

\[\ln L_{i}=\left[-\lambda_{i}+y_{i}x_{i}^{\prime}\beta-\ln y_{i}!\right]\]

for observations \(i=1,...,n\)

© 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.discrete.discrete_model.Poisson.loglikeobs.html