[R] Sample selection using multiple logit or similar

Greetings- I am seeking to fit a model using Heckman-style selection; however the wrinkle is that the selection is into multiple categories, not a binary in/out. In this case, selection is into the type of higher-education institution a student attended; the goal is to estimate post-graduation

Re: [R] Dual Core vs Quad Core

On Mon, 17 Dec 2007, Kitty Lee wrote: > Dear R-users, > > I use R to run spatial stuff and it takes up a lot of ram. Runs can take > hours or days. I am thinking of getting a new desktop. Can R take advantage > of the dual-core system? > > I have a dual-core computer at work. But it seems that r

Re: [R] perl module for R

http://www.omegahat.org/RSPerl/ -- Andrew J Perrin - andrew_perrin (at) unc.edu - http://perrin.socsci.unc.edu Associate Professor of Sociology; Book Review Editor, _Social Forces_ University of North Carolina - CB#3210, Chapel Hi