blackscorpio wrote: > > Dear community, > > I am currently trying to fit an ordinal logistic regression model with the > polr function. I often get the same error message : > > "attempt to find suitable starting values failed", for example with : > ... > Does anyone have a clue ? >
Yes. The code that generates a starting value for the optimization is flakey. lrm in the Design library appear to be more robust. -- View this message in context: http://r.789695.n4.nabble.com/likelyhood-maximization-problem-with-polr-tp2528818p3030397.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.
