On Fri, 26 Aug 2005, Shengzhe Wu wrote: > Thanks for your reply. Actually I called function as below. > > p1 = predict(object, newdata, dimen=1) > p2 = predict(object, newdata, dimen=1, method=debiased) > p3 = predict(object, newdata, dimen=1, method="predictive")
So why did you say something different? > The MAP classification of prediction results by any method are the > same. I know what the method "plug-in" and "debiased" mean, but what > does the "vague prior" for the method "predictive" mean? what is > "vague" here? Please do as we ask, and read the book for which this is supporting material (on p.339, to save you looking in the index). > > Thank you, > Shengzhe > > > > On 8/26/05, Prof Brian Ripley <[EMAIL PROTECTED]> wrote: >> On Fri, 26 Aug 2005, Shengzhe Wu wrote: >> >>> I use lda (package: MASS) to obtain a lda object, then want to employ >>> this object to do the prediction for the new data like below: >>> >>> predict(object, newdata, dimen=1, method=c("plug-in", "predictive", >>> "debiased")) >> >> That is not how you call it: when a character vector is given like that >> those are alternatives. Do read the help page, as we ask. >> >>> What is the exact difference among the three methods? What is the >>> difference of prediction results when applying different method? >> >> This is stated on the help page. If you are unfamiliar with the area, >> note that the posting guide points out that MASS is support software for a >> book and the explanations are in the book. The help page also has >> references: please do read them (before posting). >> >>> PLEASE do read the posting guide! >>> http://www.R-project.org/posting-guide.html >> >> -- >> Brian D. Ripley, [EMAIL PROTECTED] >> Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ >> University of Oxford, Tel: +44 1865 272861 (self) >> 1 South Parks Road, +44 1865 272866 (PA) >> Oxford OX1 3TG, UK Fax: +44 1865 272595 >> > > -- Brian D. Ripley, [EMAIL PROTECTED] Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595 ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html