Displaying 20 results from an estimated 100 matches similar to: "Second-order effect in Parametric Survival Analysis"
2009 Nov 29
2
Time Series Rating Model
To R programming experts,
I am a undergraduate student, and now doing research personally. I apply diagonal bivariate poisson (R package "bivpois") with stochatics weighted function (refer to dixoncoles97 section 4.5 to 4.7). However I dont know how to fit this stochatical weighted function to the completed bivariate poisson model.
I know that some other references for dynamic soccer
2010 Jul 03
1
XML and RCurl: problem with encoding (htmlTreeParse)
Hi All,
First method:-
>library(XML)
>theurl <- "http://home.sina.com"
>download.file(theurl, "tmp.html")
>txt <- readLines("tmp.html")
>txt <- htmlTreeParse(txt, error=function(...){}, useInternalNodes =
TRUE)
>g <- xpathSApply(txt, "//p", function(x) xmlValue(x))
>head(grep(" ", g, value=T))
[1] " |
2012 Jan 14
2
How can I doing Quality adjusted survival analysis in R?
Hi R users
I need to estimate, with kaplan Meier methodology, a Quality adjusted
survival analysis. It is possible doing this at R?
Thanks in advance.
Best Regards
Pedro Mota Veiga
--
View this message in context: http://r.789695.n4.nabble.com/How-can-I-doing-Quality-adjusted-survival-analysis-in-R-tp4295868p4295868.html
Sent from the R help mailing list archive at Nabble.com.
2011 Nov 14
0
Enquiry about 2nd-order interactions survival analysis
David's answers were correct. You are looking deep into the code when
there is no reason to to so.
1. h(t|(X=x,Z=z)) = exp(Beta0 + XZBeta1)
Most statisticians will tell you that this is an unwise model. The
reason is that if you replace X with "X+1" the fit changes, which is
almost never desirable. What if someone coded your dummy variable as
1/0 instead of 0/1 -- wouldn't
2010 Feb 11
3
Creating a new Access database with R
I am facing the same problem as well, I would like to code with following concept but wondering how to cope it.
if (*mdb file exist)
{ add new row/col }
else
{ add new *mdb file }
----------------------------------------------------------------------------------------------
From: Uri Shimron <UriShimron_at_optiver.com>
Date: Thu 21 Sep 2006 - 13:27:35 GMT
First of all,
2011 Dec 30
2
Joint modelling of survival data
Assume that we collect below data : -
subjects = 20 males + 20 females, every single individual is independence,
and difference
events = 1, 2, 3... n
covariates = 4 blood types A, B, AB, O
http://r.789695.n4.nabble.com/file/n4245397/CodeCogsEqn.jpeg
?m = hazards rates for male
?n = hazards rates for female
Wm = Wn x ?, frailty for males, where ? is the edge ratio of male compare to
female
Wn =
2009 Apr 13
2
joint estimation of two poisson equations
Dear list members,
Is there a package somewhere for jointly estimating two poisson processes?
I think the closest I've come is using the "SUR" option in the Zelig
package (see below), but when I try the "poisson" option instead of
the "SUR" optioin I get an error (error given below, and indeed,
reading the documentation of the Zelig package, I get the impression
2009 Dec 24
6
benchmark results
I've had the chance to use a testsystem here and couldn't resist running a
few benchmark programs on them: bonnie++, tiobench, dbench and a few
generic ones (cp/rm/tar/etc...) on ext{234}, btrfs, jfs, ufs, xfs, zfs.
All with standard mkfs/mount options and +noatime for all of them.
Here are the results, no graphs - sorry:
http://nerdbynature.de/benchmarks/v40z/2009-12-22/
Reiserfs
2009 Dec 24
6
benchmark results
I've had the chance to use a testsystem here and couldn't resist running a
few benchmark programs on them: bonnie++, tiobench, dbench and a few
generic ones (cp/rm/tar/etc...) on ext{234}, btrfs, jfs, ufs, xfs, zfs.
All with standard mkfs/mount options and +noatime for all of them.
Here are the results, no graphs - sorry:
http://nerdbynature.de/benchmarks/v40z/2009-12-22/
Reiserfs
2009 Oct 05
0
Apply R in Excel through RExcel
ryusuke:
It sounds like you need to have (D)COM server to be able to work on the background. As for the foreground, rcom is what you need and it appears to be working OK. I am out of my office right now but I'll back to work next week and I will be able to explain in more detail how the applications I tied together work with RExcel and R. You can download the latest staconnDCOM.latest.exe from
2010 Feb 11
0
sqlSave data into multiple *.mdb files
Hi All,
con <- member <- class <- list()
for(i in 1:5)
{ con[[i]] <- odbcConnectAccess(paste("C:/Desktop/Data/source",i,".mdb",sep = '')) #read data from Access files
member[[i]] <- sqlFetch(con[[i]],'member') #get table data from *.mdb files
observe[[i]] <- sqlFetch(con[[i]],'observe') #get table data from *.mdb
2009 May 01
1
[GIT PULL] ocfs2 fixes
Linus, et al,
Here are the outstanding ocfs2 fixes we have for 2.6.30. The
important ones are journal credit fixes for the new indexed directories.
There's also MAINTAINERS update for my ocfs2 git tree. Please pull.
Joel
The following changes since commit 612392307cb09e49051225092cbbd7049bd8db93:
Ryusuke Konishi (1):
nilfs2: support nanosecond timestamp
are available in the
2007 Jun 08
1
pointwise confidence bands or interval values for a non parametric sm.regression
Dear all,
Is there a way to plot / calculate pointwise confidence bands or
interval values for a non parametric regression like sm.regression?
Thank you in advance.
Regards,
Martin
2011 Oct 26
1
Performing a non parametric Friedman Test
My data looks like this:
(treatments)
T1 T2 T3
DK 8 5 3
JP 5 4 1
AS 9 7 4
MK 8 4 4
DK, JP, AS, and MK are 4 different people (blocks) I am using.
This is my code
2003 Feb 19
0
Non-parametric predictive modelling consultant required
I have an urgent need for assistance with a complex predictive modelling
project - preliminary discussion with numerous statisticians suggests
that off-the-shelf packages (including existing R libraries) are unlikely
to provide a complete solution to the particular problem that we're
tackling.
I'm looking for a statistics consultant to help with a short (less than 4
weeks) project. The
2009 May 12
0
Trouble with parametric bootstrap
Hi,
I'm having trouble understanding how to construct a random number generator
for a parametric bootstrap. My aim is to bootstrap a Likelihood Ratio
statistic (under the null) for a linear model. The function at this point
is given by
boot.test.n01 <- function(data, indeces, maxit=20) {
y1 <- fit1+se(e2)*rnorm(314)
mod1 <- glm(y1 ~ X1-1, maxit=maxit)
y2 <-
2005 Feb 03
0
non parametric bootstrap
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2011 Jan 26
0
post-hoc comparisons in GAMs (mgcv) with parametric terms
Dear list,
I?m wondering if there is something analogous to the TukeyHSD function
that could be used for parametric terms in a GAM. I?m using the mgcv
package to fit models that have some continuous predictors (modeled as
smooth terms) and a single categorical predictor. I would like to do
post hoc test on the categorical predictor in the models where it is
significant.
Any suggestions?
2003 Jun 17
1
How to generate a pairwise non-parametric comparison table?
Dear list
I am comparing the results of several different experimental setups. With kruskal.test() I can test if there is any difference at all in any of them, if I understand it correctly. But now, when there is a difference, how do I generate a (half-) table of pairwise comparisons, using e.g. wilcox.test(), to find the ones where the difference actually occurs.
I guess I don't have to
2004 Feb 13
1
parametric bootstrap and computing factor scores
We have a project on which we need to compare various methods for
computing factor scores. Are there any R routines available that do
parametric bootstrap or compute factor scores?