aitnuhk

How to fix the error "Diagonal of the variance_matrix_ has negative values or NaNs while using Gompertz function?

2

While running the example of Gompertz function using the waltons dataset, I encountered this error: `.local/lib/python3.6/site-packages/lifelines/fitters/__init__.py:994: StatisticalWarning: The diagonal of the variance_matrix_ has negative values or NaNs. This could be...