statsmodels.discrete.count_model.ZeroInflatedPoisson.loglikeobs¶
- ZeroInflatedPoisson.loglikeobs(params)¶
Loglikelihood for observations of Generic Zero Inflated model.
- Parameters:
- paramsarray_like
The parameters of the model.
- Returns:
- loglike
ndarray The log likelihood for each observation of the model evaluated at params. See Notes for definition.
- loglike
Notes
\[\ln L=\ln(w_{i}+(1-w_{i})*P_{main\_model})+ \ln(1-w_{i})+L_{main\_model} where P - pdf of main model, L - loglike function of main model.\]for observations \(i=1,...,n\)