Dear Terry, I agree that this example is highly atypical. Having said that, my experience with optimization algorithms is that scaling (a.k.a. standardizing) the continuous covariates is greatly helpful in terms of convergence. Have you considered automatically standardizing the continuous covariates, and then converting the scaled coefficients back to the original scale? Of course, the end user could do this just as easily!
Best, Ravi Ravi Varadhan, Ph.D. Assistant Professor The Center on Aging and Health Division of Geriatric Medicine & Gerontology Johns Hopkins University rvarad...@jhmi.edu<mailto:rvarad...@jhmi.edu> 410-502-2619 [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
