Displaying 7 results from an estimated 7 matches for "toxicogenomics".
2004 Apr 20
0
[JOB] Toxicogenomics Statistician
> Toxicogenomics Statistician
>
> The successful candidate will provide statistical support to nonclinical
> areas of R&D, especially in the areas of investigative toxicology, safety
> biomarkers, and toxicogenomics. The candidate will collaborate with
> scientists to plan meaningful experiment...
2004 May 13
3
storage of lm objects in a database
...rsion routine for these objects (or maybe there's already a conversion available for lm?). I assume that the data do not need to be analyzed with a any other software than R.
I'm happy for any suggestions and links to get some more info on this.
kid regards,
Arne
--
Arne Muller, Ph.D.
Toxicogenomics, Aventis Pharma
arne dot muller domain=aventis com
2004 Jun 28
1
unbalanced design for anova with low number of replicates
...onably large numbe rof replicates within each cell (even though not balanced). However, since I've only 0 to 4 replicates I'm worried that the standard anova may not be the way to go.
Are there special packages for unbalanced designs like this?
kind regards,
Arne
--
Arne Muller, Ph.D.
Toxicogenomics, Aventis Pharma
arne dot muller domain=aventis com
2004 May 14
1
help with memory greedy storage
...tted and value vectors are >1300 elements long. I couldn't find a more compact form of storage that I is still easy to explore afterwards.
Suggestions on how to get this done more efficiently (in terms of memory) are greatfully received.
kind regards,
Arne
--
Arne Muller, Ph.D.
Toxicogenomics, Aventis Pharma
arne dot muller domain=aventis com
2004 Apr 06
1
Storing p-values from a glm
...coefficient attribute is a matrix, and with the "4" you refere to the
pvalue (at least in lm - don't know if summary(glm) produces sligthely
different output).
to skip the intercept (1st row): v <- summary(glmfit)$coefficients[-1,4]
hope this helps,
Arne
--
Arne Muller, Ph.D.
Toxicogenomics, Aventis Pharma
arne dot muller domain=aventis com
> -----Original Message-----
> From: r-help-bounces at stat.math.ethz.ch
> [mailto:r-help-bounces at stat.math.ethz.ch]On Behalf Of Roy Sanderson
> Sent: 06 April 2004 14:36
> To: r-help at stat.math.ethz.ch
> Subject: [R] Storin...
2004 Apr 20
0
strange result with contrasts
...it doesn't look different from e.g. "dose025mM-000mM").
Do you've any suggestions what I'm doing wrong here (assuming that I believe the SAS result)? Any hints what I can do to further analyse this problem?
Many thanks for your help,
+regards,
Arne
--
Arne Muller, Ph.D.
Toxicogenomics, Aventis Pharma
arne dot muller domain=aventis com
2004 May 10
5
R versus SAS: lm performance
Hello,
A collegue of mine has compared the runtime of a linear model + anova in SAS and S+. He got the same results, but SAS took a bit more than a minute whereas S+ took 17 minutes. I've tried it in R (1.9.0) and it took 15 min. Neither machine run out of memory, and I assume that all machines have similar hardware, but the S+ and SAS machines are on windows whereas the R machine is Redhat