Displaying 6 results from an estimated 6 matches for "tarca".
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tara
2006 Apr 10
5
p values for a GEE model
...is a Generalized Estimation
Equation Model, like
library(gee)
summary(gee(Y~T,id=P,data=data))
Questions:
A) Is the gee approach suitable in this case with the model formulae I
use?
B) Can I obtain a p-value for the fixed effect T ?
Thanks,
Laurentiu Tarca
[[alternative HTML version deleted]]
2011 Sep 16
1
parsing error when using R CMD check
...function at this line:
return(res[res$ID %in% list$targetGeneSets,])
The code is ok, since it runs if I paste it in R.
Is this a known parsing issue in R CMD check?
Thanks,
Adi
> sessionInfo()
R version 2.13.0 (2011-04-13)
Platform: x86_64-unknown-linux-gnu (64-bit)
Thanks,
Adi Laurentiu TARCA, Ph.D.
Assistant Professor (Research),
Department of Computer Science & Center for Molecular Medicine and Genetics, Wayne State University,
Director, Bioinformatics and Computational Biology Unit, Perinatology Research Branch (NICHD),
3990 John R., Office 4809,
Detroit, Michigan 48201
Tel: 1-3...
2004 May 04
1
nnet function
...done by the user.
2) I need to understand the $wts matrix. I do imagine that it is a single
column transformation of the two
matrices of weighs (input to hidden Ninputs+1 x Nodes) and hidden to output
(Nodes+1 x Noutputs).
Thanks
----------------------------------------------
Dr. Laurentiu Adi Tarca
Post Doc. in Bioinformatics
Forest Biology Research Center
C-E-Marchand Bld, 3113
Laval University
Quebec, (Qc)
G1K-7P4
Tel: 656-2131 ext. 4509
e-mail: ltarca at rsvs.ulaval.ca
2005 Aug 26
1
passing arguments from nnet to optim
...ue 1.652116
iter 80 value 1.651860
iter 90 value 1.651525
iter 100 value 1.651292
final value 1.651292
stopped after 100 iterations
Is still producing reports at each 10 iterations.
Has anyone an idea how can I turn off the report generation or at least
to reduce its frequency?
Thanks,
Adi L. TARCA
2004 Jun 15
1
building R libraries (windows) - R CMD check problems
...m/DESCRIPTION' ... OK
* preparing 'nnNorm':
* checking whether 'INDEX' is up-to-date ... OK
* creating vignettes ... OK
* removing junk files
* building 'nnNorm_1.0.tar.gz'
Has anyone an idea what the problem might be ? I am using Win XP, R 1.9.0.
Thanks,
Laurentiu Tarca
[[alternative HTML version deleted]]
2005 Apr 06
0
nnet classification using unbalanced classes
Hi everybody,
I want to obtain a classification model using the nnet function for a
simple two class problem.
My problem is that number of samples in the first class (n1) is about twice
higher than the one
in class two (n2). I would like to use the weights argument in the nnet
function to equalize the prior probabilities, but I am not
sure which values I should assign.
My first guess would be