[R] Quantile Regression Question
roger at ysidro.econ.uiuc.edu
Thu Nov 15 02:00:37 CET 2007
Package questions to package maintainers.... please.
"non-positive fis" is not an error, it is a warning -- if the number
of negative fis
is large relative to the sample size then there is some reason to
plausibility of the specification of the model specified by the rq
formula. So you
can consider this _warning_ to be a diagnostic.
url: www.econ.uiuc.edu/~roger Roger Koenker
email rkoenker at uiuc.edu Department of Economics
vox: 217-333-4558 University of Illinois
fax: 217-244-6678 Champaign, IL 61820
On Nov 14, 2007, at 6:43 PM, Arti Mann wrote:
> Could you please explain what is non-positive fis error? I have
> been trying to use quantile regression (rq) procedure and I keep
> ending up with this error. I haven't been able to find an
> explanation for the same.
> Best Regards,
> Arti Mann
> Ph.D. Student
> Department of Information Systems
> W.P. Carey School of Business
> Arizona State University
> Email : Arti.Mann at asu.edu
> R-help at r-project.org mailing list
> PLEASE do read the posting guide http://www.R-project.org/posting-
> and provide commented, minimal, self-contained, reproducible code.
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