[R] Are you experienced in SAS ...
kjetilh at umsanet.edu.bo
Mon Nov 26 19:08:30 CET 2001
Peter Dalgaard BSA wrote:
> Rolf Turner <rolf at maths.uwa.edu.au> writes:
> Not the sort of thing to make Doug and Jose happy. They've probably
> heard these sentiments before, though.
> But... There's an important difference between the two
> implementations, exactly in the area of strata. These are BTW really
> just "levels" in the sense of multilevel models (pupils within classes
> within schools within municipalities within countries, etc.) and their
> explicit specification makes some block-diagonal matrix optimizations
> possible. For largish data sets, you will find that SAS loses out
> efficiency-wise, because it doesn't do these optimizations.
Only a related question. Anybody have experience with lme with large
data sets? Specifically, I have a data set with almost 60000
Anybody used lme with something like this? And, what kind of computer
would be necessary? Thats relevant for me, for I amabout to buying a
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