Displaying 20 results from an estimated 10000 matches similar to: "feature selection problem,urgent help need"
2012 Nov 09
0
[LLVMdev] [NVPTX] llc -march=nvptx64 -mcpu=sm_20 generates invalid zero align for device function params
Dear all,
I'm attaching a patch that should fix the issue mentioned above. It
simply makes the same check seen in the same file for global
variables:
emitPTXAddressSpace(PTy->getAddressSpace(), O);
if (GVar->getAlignment() == 0)
O << " .align " << (int) TD->getPrefTypeAlignment(ETy);
else
O << " .align " <<
2011 May 16
0
SEM Model Not Converging
I'm trying to build a SEM using the sem package. I'll attach my model
specification below.
When I turn debug=TRUE, it seems as if I'm getting to convergence
because I get this message:
Successive iterates within tolerance.
Current iterate is probably solution.
However, at the end of the process I get this message:
Warning message:
In sem.default(ram = ram, S = S, N = N,
2013 Apr 28
0
hierarchical confirmatory factor analysis with sem package
Hi,
I am doing a hierarchical CFA using the sem package. I have 20 items, and I
have 2 factors (F3 and F4), and also F1 and F2 are nested within F3.
Here is the code that I have, but it is giving me an error message "Warning
message:
In eval(expr, envir, enclos) : Negative parameter variances.
Model may be underidentified." and a further error "Error in
summary.objectiveML(cfa,
2011 Aug 19
2
Auto key legend does not match plot
Dear R-help members. I am an 'R-learner' (about 6 hours so far) using the
lattice library to create a ranked dotplot and am colour coding the dots by
a variable called "Commodity". However when i use autokey to make a legend
the size (cex) and symbol (pch) do not match what is on the dotplot.
Code is below and image attached
library("lattice")
Cal_dat <-
2012 Jul 11
2
[LLVMdev] [NVPTX] llc -march=nvptx64 -mcpu=sm_20 generates invalid zero align for device function params
Hello,
FYI, this is a bug http://llvm.org/bugs/show_bug.cgi?id=13324
When compiling the following code for sm_20, func params are by some reason
given with .align 0, which is invalid. Problem does not occur if compiled
for sm_10.
> cat test.ll
; ModuleID = '__kernelgen_main_module'
target datalayout = "e-p:64:64-i64:64:64-f64:64:64-n1:8:16:32:64"
target triple =
2009 Jul 01
1
How should I denormalise a data frame list of lists column?
Hi,
I have a data frame where one column is a list of lists. I would like to
subset the data frame based on membership of the lists in that column and be
able to 'denormalise' the data frame so that a row is duplicated for each of
its list elements. Example code follows:
# The data is read in in this form with the c2 list values in single strings
which I then split to give lists:
> f1
2005 Nov 08
0
sorting during xtabs? sorting by "individual" order?
Hey alltogether,
refacturing a package (before it will be released),
I ran across the following problem.
I have two directories with different text files,
I want to read the first and construct a document-term
matrix from it (every term=word in a row, every file in
a column, occurrence frequencies form the values).
The second directory contains different files. It
needs to be read in to also
2009 May 06
1
Duplicating meta-regression results from PROC MIXED with lmer
R-experts:
In 2002, Hans Van Houwelingen et al. published a tutorial on how to do
meta-regression in Statistics in Medicine. They used the classic BCG
dataset of Colditz to demonstrate correct methodology and computed the
results using PROC MIXED in SAS. In trying to duplicate the results
presented in this paper, I have discovered that I can reproduce
certain items with lmer but not
2008 Apr 18
3
Function redefinition - not urgent, but I am curious
This is just my curiousity working.
Suppose I write:
f1 <- function(x) x + 1
f2 <- function(x) 2 * f1(x)
f2(10)
# 22
f1 <- function(x) x - 1
f2(10)
# 18
This is quite obvious. But is there any way to define f2
in such a way that we "freeze" the definition of f1?
f1 <- function(x) x + 1
f2 <- function(x)
# put something here
2 * f1(x)
# probably put something else here
2009 Mar 30
2
HELP WITH SEM LIBRARY AND WITH THE MODEL'S SPECIFICATION
Dear users,
i'm using the sem package in R, because i need to improve a confermative factor analisys.
I have so many questions in my survey, and i suppose, for example, that Question 1 (Q1) Q2 and Q3 explain the same thing (factor F1), Q4,Q5 and Q6 explain F2 and Q7 and Q8 explain F3...
For check that what i supposed is true, i run this code to see if the values of loadings are big or not.
2011 Feb 14
4
sem problem - did not converge
Someone can help me? I tried several things and always don't converge
# Model
library(sem)
dados40.cov <- cov(dados40,method="spearman")
model.dados40 <- specify.model()
F1 -> Item11, lam11, NA
F1 -> Item31, lam31, NA
F1 -> Item36, lam36, NA
F1 -> Item54, lam54, NA
F1 -> Item63, lam63, NA
F1 -> Item65, lam55, NA
F1 -> Item67, lam67, NA
F1 ->
2013 Nov 17
1
[LLVMdev] A question about Greedy Register Allocator's reload instruction.
Hi all, I'm very instresting in LLVM, and trying to port a dsp target on LLVM now.
I found that, the Greddy Register Allocator will generate a reload instrucion just between the function call and ADJCALLSTACKUP instruction. If the reload instruction is transfered to be a load instruction finally, which uses the SP register as an operand, and the target uses the ADJCALLSTACKUP instruction to
1997 Nov 28
0
R-alpha: Latin-1 characters / Locale etc.
[to R-devel, for everyone's information;
thanks a lot, Peter!]
>>>>> "PD" =3D=3D Peter Dalgaard BSA <p.dalgaard@biostat.ku.dk> writes:
PD> Hmmm. You may need a call to
PD> #include <locale.h>
PD> setlocale(LC_ALL,"")
PD> (or LC_CTYPE?) before your environment variables take effect.
Yes, this was `it'.
2006 Nov 30
1
data.frame within a function (PR#9294) (cont'd)
This continues the message "data.frame within a function (PR#9294)" that
was posted on 2006/10/12. Duncan Murdoch kindly replied. I'm using the
current version R 2.4.0, but the same issue exists. Just copy and paste
the following code under R, and compare the output of f1() and f2() and
the output of f3() and f4(). Does anybody have any idea? Thanks.
2012 Oct 01
0
[Fwd: REML - quasipoisson]
Hi Greg,
For quasi families I've used extended quasi-likelihood (see Mccullagh
and Nelder, Generalized Linear Models 2nd ed, section 9.6) in place of
the likelihood/quasi-likelihood in the expression for the (RE)ML score.
I hadn't realised that this was possible before the paper was published.
best,
Simon
ps. sorry for slow reply, the original message slipped through my filter
for
1999 Feb 18
1
[R] possible bug in loglm (PR#122)
Bug report: there is a problem with loglm (or some underlying code)
when used with updating within a function. For example, this code
works as expected, when used outside a function:
-------------------------------------------------
library(MASS)
2008 Oct 08
1
File permissions and Unix umask.
Hi,
I have a question about file permissions and how they are affected by a
client's umask.
To illustrate my question, I issued the following commands first on a
local ext3 file system and
then on a cifs file system:
$ umask 0002
$ touch f1
$ echo xx > f2
$ umask 0022
$ touch f3
$ echo xx > f4
$ ls -l
On Ext3, the output is:
-rw-rw-r-- 1 abdv29 users 0 Oct 9 00:31 f1
-rw-rw-r-- 1
2008 Jun 24
4
Find max of a row in data frame (like Excel)
Hi,
Here's the data we have:
> rs[1:5,]
probe_id f1 f2 f3 f4 M A f
1 A_68_P20002076 2 58 0 0 1.51778114 6.344453 59
2 A_68_P20002775 22 8 15 0 0.43419304 5.488819 59
3 A_68_P20005791 43 3 0 0 0.05698666 9.830594 59
4 A_68_P20005805 11 34 0 0 1.71076835 6.624038 59
5 A_68_P20006729 16 44 0 0 0.85498261 6.044229 59
I want rs$f be the max of f1, f2, f3,
2000 Aug 05
1
Problem reading in table with extra spaces
I wrote with C and created a file that I can read into S+, but R chokes
because I've got multiple spaces between some variables and there is a
space at the start of each data line. This happens becuase C was
right-justifying the numbers as it printed them out. It looks like
this:
T Run Seed IntAct Change f0 f0T0 f0T1 f0T2 average0 variance0
relentropy0 f1 f1T0 f1T1 f1T2 average1 variance1
2009 Apr 13
4
Group by in R
Hi,
I have the following table data:
f1, f2, f3, f4.
I want to compute the counts of unique combinations of f1-f4. In SQL I would
just write:
SELECT COUNT(*) FROM <table> GROUP BY f1, f2, ..,f4.
How to do this in R?
Thanks,
Nick
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