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From | Maarten buis <maartenbuis@yahoo.co.uk> |
To | statalist@hsphsun2.harvard.edu |
Subject | Re: st: Mlogit: Log pseudolikelihood bug? |
Date | Sun, 27 Feb 2011 12:48:22 +0000 (GMT) |
--- On Sun, 27/2/11, Robert L. Hellpap wrote: > I tried to estimate a quiete complex model with more than > 100 dummy's as independent on a 6 category dependent > variable. When my results where displayed the log > pseudolikelihood value was announced as ".z_" which should > be a missing value. What does ist mean that the log > pseudolikelihood is a missing value and is it legitime to > reduce the number of iterations until I receive a legal > value? It means that you need to simplify your model. Remember that the trick of adding dummies to get a fixed effects regression does not work for non-linear models like -mlogit-, so the value of adding that many dummies is often doubtful anyhow. Hope this helps, Maarten -------------------------- Maarten L. Buis Institut fuer Soziologie Universitaet Tuebingen Wilhelmstrasse 36 72074 Tuebingen Germany http://www.maartenbuis.nl -------------------------- * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/