Abu Naser <likhonnaser <at> hotmail.com> writes: > I have been trying to fit my data (only right censored) > with gumbel distribution using fitdistrplus. I am > getting very high standard error. I have been wondering why. > The followings are the outputs: > > fit1=fitdistcens(dr0, "gumbel", start=list(a=99, b=0.6), > optim.method= "L-BFGS-B", lower = 0.0, > upper = Inf) > > summary(fit1)
[snip] > estimate Std. Error > a 97.8260371 3115.09 > b 0.1115094 173.79 > Loglikelihood: -9.749883e-10 AIC: 4 BIC: 21.21178 [snip] Impossible to say without a reproducible example. It seems very suspicious that your log-likelihood is almost exactly zero. Do you have a very small data set? ______________________________________________ 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.
