> I would to know with ranges of GCV or UBRE values can be considered as > adequate to consider a GAM as correct
I don't think that there is really an answer to this. It's a bit like asking what range of values of the residual sum of squares means that a linear model is correct. I've only seen the GCV score used as a statistic for judging the relative appropriateness of models, not the `absolute' appropriateness. For detecting `incorrectness' of a GAM I'd look at residual plots and in cases where the scale parameter ought to be one, check that the residuals are consistent with this. Simon _____________________________________________________________________ > Simon Wood [EMAIL PROTECTED] www.stats.gla.ac.uk/~simon/ >> Department of Statistics, University of Glasgow, Glasgow, G12 8QQ >>> Direct telephone: (0)141 330 4530 Fax: (0)141 330 4814 ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
