Displaying 3 results from an estimated 3 matches for "cardiolgy".
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cardiology
2007 May 09
1
Fitting model with response and day bias
Hi,
I'm trying to fit a model which has a response bias, but also a day to day
bias.
If I try to simulate the data, I don't get the right values with optim, and
also I can't
use the function to give a prediction interval.
My simulated data are:
DF <- as.data.frame(cbind(x=rep(1:10,2),dag=rep(1:2,each=10)))
bias <- c(-0.2,0.5)
DF$y <- ((DF$x-0.1) * 5)+2 +
2007 Apr 04
1
compile errors with rgl-0.70.570 on FreeBSD
Thank you for your work on rgl.
Reading in another thread about your new (inofficial) version of rgl
(see below) I tried it with R version 2.5.0 alpha (2007-03-31 r40986)
under FreeBSD 7.0-CURRENT. Unfortunately I got the following error:
-------
#R CMD INSTALL rgl_0.70.570.tar.gz
* Installing to library '/usr/local/lib/R/library'
* Installing *source* package 'rgl' ...
2007 Apr 10
2
Computational speed question
Hello,
I'm doing bootstrap in R 2.4.1 in order to compute standard errors of an
estimator. I'm running the same program on 4 computers. The core of the
program is a nlm minimization of a function, which is (I believe) nicely
coded using (t)apply and all the vectorized stuff.
I'm slightly puzzled by the differences in the speed of computation. The
program works twice as fast on a