Displaying 13 results from an estimated 13 matches for "wuming".
2006 May 01
6
R-2.3.0 make error
Dear list,
When compiling the R-2.3.0 on FC4 x86_64, I got the following errors:
make[3]: Entering directory
`/project/scratch3/ligroup/wuming/src/R-2.3.0/src/main'
gcc -Wl,--export-dynamic -L/usr/local/lib64 -o R.bin Rmain.o
CConverters.o CommandLineArgs.o Rdynload.o Renviron.o RNG.o apply.o
arithmetic.o apse.o array.o attrib.o base.o bind.o builtin.o
character.o coerce.o colors.o complex.o connections.o context.o cov.o
cum.o dcf.o d...
2006 Mar 29
3
Sub-vector
Dear list,
Given a vector of logical values, say
>a <- c(TRUE,TRUE,TRUE,FALSE,FALSE,FALSE,FALSE,TRUE,TRUE,TRUE)
Are there any R functions that can tell whether there are two or more
"TRUE" in a row in this vector?
Thanks,
Wuming
2006 Mar 22
2
R package for computing state path using Viterbi algorithm
...s well as
very good document), but it only works for continuous-time condition.
Other two HMM related packages, hmm.discnp and repeats, however, does
not have such a function (similar to "hmmviterbi()" function in
MatLab).
Is there an R package that implements such a function?
Thanks,
Wuming
2005 Sep 09
2
R-help Digest, Vol 31, Issue 9
Hi:
I use lm (linear model) to analyze 47 variables , 8 responses
So I use loop to finish it .
I want the program to show the results that P-value is less than 0.05.
How can I cite the P-valus from lm result ?
Ping
The code:
#using LM to model general fati
for (j in 48:52) {
for (i in 3:46){
gen.fat<-y_x[,j]
gen.fat<-as.numeric(gen.fat)
snp_marker<-y_x[,i]
x<-colnames(y_x)
2006 Jul 07
1
Polynomial kernel in SVM in e1071 package
...is written as
(gamma*u'*v + coef0)^d. I am a little confused here:
When doing parameter optimization (grid search or so) for polynomial
kernel, does it need to tune four parameters, gamma, coef0, C and
degree, or just two of them, C and degree (and fixing gamma to 1 and
coef0 = 1)?
Thanks,
Wuming
2006 Aug 04
1
Error when loading odesolve
...ve.so':
ld.so.1: R: fatal: relocation error: file
/project/scratch/ligroup/R1/lib/R/library/odesolve/libs/odesolve.so:
symbol __f90_ssfw: referenced symbol not found
Error: package/namespace load failed for 'odesolve'
Could any one tell me how to fix this problem?
Thanks very much.
Wuming
2005 Sep 02
1
Calculating Goodman-Kurskal's gamma using delta method
...+ D)^2
sigma.squared <- sigma.squared + phi^2
}
}
se <- (sigma.squared/sum(job))^.5 # 0.00748, which is different from
the SE 0.117 given in section 3.4.3 of that book.
I am not able to figure out what is the problem with my code... Could
anyone point out what the problem is?
Thanks.
Wuming
2004 Dec 09
1
How can I estimate parameters of probability distributions?
...pexp,
of the distribution and can I use Kolmogorov-Smirnov for hypothesis
testing in such a situation? I have read the "8.2 Examing the
distribution of a set of data" of "An Introduction to R" but I did not
find any clues on this issue. (The data is in the attachment).
Thanks
Wuming
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2005 Jun 10
1
logistic regressioin - course ornotes
Hi
I am using R for logistic regression and finding it very useful.
However, I wondered if anyone could point me to any course or notes on
this subject using R.
All help most welcome.
Stephen
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2005 May 18
1
covariance analysis by using R
Hello sir:
Here's a question on covariance analysis which needs your help.
There're 3 experiments,and x refers to control while y refers to experimental result.
The purpose is to compare the "y" values across the 3 experiments.
experiment_1:
x:0.1 0.2 0.3 0.4 0.5
y:0.5 0.6 0.6 0.7 0.9
experiment_2:
x:1 2 3 4 5
y:3 4 6.5 7.5 11
experiment_3:
x:10 20 30 40 50
y:18 35 75 90
2012 Jan 18
1
kmeans clustering on large but sparse matrix
Hi,
I have a 60k*600k matrix, which exceed the vector length limit of 2^32-1.
But it's rather sparse, only 0.02% has value. So I save is as MarketMatrix
(mm) file, it's about 300M in size. I use readMM in Matrix package to read
it in. If do so, the data type becomes dgTMatrix in 'Matrix' package
instead of the common matrix type.
The problem is, if I run k-means only on part of
2005 Jun 14
2
Logistic regression with more than two choices
Dear all R-users,
I am a new user of R and I am trying to build a discrete choice model (with
more than two alternatives A, B, C and D) using logistic regression. I have
data that describes the observed choice probabilities and some background
information. An example below describes the data:
Sex Age pr(A) pr(B) pr(C) pr(D) ...
1 11 0.5 0.5 0 0
1 40 1 0 0 0
0 34 0 0 0 1
0 64 0.1 0.5 0.2 0.2
...
2005 Oct 25
8
Can anyone please tell me how to strip the white spaces from a character vector?
for example:
> a$tic[1:10]
[1] "AIR " "ABCB " "ABXA " "ACMR " "ADCT " "ADEX "
[7] "ABM " "AFCE " "AG " "ATG "
Can anyone please tell me how to strip the white spaces from a$tic?
Thanks,
Roger
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