How to resolve convergence issues in Fit Parametric Survival platform?

Question

I'm using the Fit Parametric Survival platform and finding convergence issues with many models that I run. For example, I can use 1 model effect and get convergence, and sometimes I can use 2 model effects (independent variables), but other combinations of 2 model effects will not converge.  I don't think I have too many degrees of freedom -- one model that doesn't converge has 11 DF, while another model that does converge (on the same data) has 49DF.  What tips are there to address convergence issues?

Mark_Bailey · Answer

Nothing so far seems unusual or likely the cause for non-convergence. I recommend that you contact JMP Technical Support at support@jmp.com and ask for help. We encourage users to seek help here but your problem requires technical support.

bayesfactor · Answer

61/653 samples are right-censored.

Mark_Bailey · Answer

How much of the data is censored? What kind of censoring happens with your data?