statsmodels.miscmodels.count.PoissonZiGMLE.nloglikeobs¶

PoissonZiGMLE.nloglikeobs(params)[source]¶

泊松模型的对数似然

Parameters:¶

paramsarray_like

模型的参数。

Returns:¶

The log likelihood of the model evaluated at params

注释

\[\ln L=\sum_{i=1}^{n}\left[-\lambda_{i}+y_{i}x_{i}^{\prime}\beta-\ln y_{i}!\right]\]