Re: GLM bounds failure

Dear Agus,

I have an error message "GLM bounds failure" when running GLM using
!POISSON qualifier. The manual indicates that the data needs to be
checked. Can somebody please explain it in more detail.

The message is generated when ASReml detects predicted values which it
assesses are too small
(or too large). There should be some extra numbers in the output which
report the iteration number,
the number below a lower bound, the average of those numbers.

So I suspect you may be fitting a model where some classes have all zero
observations.
If you feel the criterion is unreasonable, or this does not seem to be the
explanation,
I am happy to look at your particular example.

ASREML 2 is now available from http://www.VSNi.co.uk

Check out my personal site http://www.cargovale.com.au/

Grace, mercy and peace to you from God our Saviour Jesus Christ

Arthur Gilmour PhD
mailto:Arthur.Gilmour_at_dpi.nsw.gov.au
Principal Research Scientist (Biometrics)
NSW Department of Primary Industries
Orange Agricultural Institute, Forest Rd, ORANGE, 2800, AUSTRALIA

fax: 02 6391 3899; 02 6391 3922 Australia +61
telephone work: 02 6391 3815; home: 02 6364 3288; mobile: 0438 251 426

http://www.dpi.nsw.gov.au/reader/17263
http://www.VSNi.co.uk/products/asreml
The ASReml discussion group is at ASREML-L_at_dpi.nsw.gov.au
To join it, mailto:arthur.gilmour_at_dpi.nsw.gov.au
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Proposed travel:
Aust Genstat Conf 5-8 Dec Victor Harbour
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Received on Sat Sep 11 2006 - 10:54:37 EST