Subject: Re: weighted.residuals() ?
From: Peter Dalgaard BSA (email@example.com)
Date: Fri 13 Aug 1999 - 00:03:56 EST
Martin Maechler <firstname.lastname@example.org> writes:
> I'm about to drop the above "[w!=0]", document weighted.residuals
> and fix deviance.lm(.) according to John Maindonald's bug report
> (and use his suggestion to make cooks.distance() work for glm()'s ..).
> Any objections ? [please in the next 5 hours or so...]
Be *very* careful! The zero-weight issue has bitten us several times
before. Check whether your change would be consistent with what lm/glm
does in such cases. (In particular, degrees of freedom calculations can
get in trouble).
-- O__ ---- Peter Dalgaard Blegdamsvej 3 c/ /'_ --- Dept. of Biostatistics 2200 Cph. N (*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918 ~~~~~~~~~~ - (email@example.com) FAX: (+45) 35327907 -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-devel mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: firstname.lastname@example.org _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
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