liuxj1980
我在进行多分类变量的logistic回归时遇到了一下警告,怎么处理?多谢!
1.Warnings
The log-likelihood values are approaching zero. There may be a complete separation in the data. The maximum likelihood estimates do not exist.
The NOMREG procedure continues despite the above warning(s). Subsequent results shown are based on the last iteration. Validity of the model fit is uncertain.
2.Warnings
The following variables: V8, V13, V3, V4, V5, V6, V9, V10, V11, V12, V14, VAR00013, VAR00014, VAR00021 are used only to define the subpopulations but not in constructing the model.
There is possibly a quasi-complete separation in the data. Either the maximum likelihood estimates do not exist or some parameter estimates are infinite.
The NOMREG procedure continues despite the above warning(s). Subsequent results shown are based on the last iteration. Validity of the model fit is uncertain.