statsmodels.discrete.count_model.GenericZeroInflated.loglike¶

GenericZeroInflated.loglike(params)[source]¶

Loglikelihood of Generic Zero Inflated model.

Parameters:¶

paramsarray_like

The parameters of the model.

Returns:¶

loglikefloat

The log-likelihood function of the model evaluated at params. See notes.

Notes

$$\ln L=\sum _{y_i=0}\ln (w_i+(1-w_i)\ast P_{main\mathrm{\_}model})+\sum _{y_i>0}(\ln (1-w_i)+L_{main\mathrm{\_}model})whereP-pdfofmainmodel,L-loglikefunctionofmainmodel.$$