Displaying 20 results from an estimated 200 matches similar to: "BIC vz SBIC vz SIC"
2004 Dec 02
2
Text Mining with R
Dears,
anyone has experiences with text mining and R?
I'll be very greatfull for tutorial or examples.
Thanks
--
Daniele Medri - http://www.medri.org
2006 Jul 14
1
party - ctree() - terminal nodes reference for every obs
Dear R.Users,
using ctree() (from "party" library) on a data.frame, I want to append a
column with the references for the groups/segments detected. While these
nodes are easy readable in output, I need a vector for my obs.
Hints?
Cheers
--
Daniele Medri
2006 Feb 20
2
Group a dinamic number of vectors in a data.frame
Hi all,
I need to create a data.frame from a variable number of vectors.
The number of these vectors could change so I need a dinamic way to
group all in a data.frame. The number is length(abc).
e.g. vectors in my workspace
N1 <-c(1,2,3,4)
N2 <-c(1,2,3,4)
N3 <-c(1,2,3,4)
abc <-c(1,2,3)
the data.frame I want to create:
tcm <-data.frame(OneVector, TwoVector,
2003 Jul 03
1
AID and CHAID: news about?
Dear R-helpers,
I just search if is there something for AID and CHAID in R: one message in
this list (last year) without success and no possibility.
News about? If "no" let's me know because some friends are looking for thesis
and this could be a usefull job.
bye
--
Daniele Medri
2005 May 23
1
Best configure options for Data Mining
Dears,
I am selecting configure-options for Data Mining applications with R,
notes that guide a user from SVN repository to system compilation on
GNU/Linux system ("gcc" as compiler).
Status:
* My system specs:
- processor Intel 2.8Ghz HT
- kernel Linux 2.6.10-5-686-smp
- ram 1500 Mbyte
* Dataset to use:
- ~900 Mbyte of text file
* R from svn repository (daily updated)
*
2023 Mar 13
1
Adding support for S7 to base R
I don't know if this is the right forum, but I'd like to ask an open-ended
question about the goals of the S7 OOP system, which is, where do we see
the ultimate future of object-oriented programming in R being? Do we see S7
eventually complementing S3 and S4 in "base" (in quotes because S4 is
provided by the methods package), or do we see (or even wish?) for S7 to
supplant both
2011 Mar 04
0
/etc/vz/vznetctl.conf has to be /etc/vz/vznet.conf
Hi!
In [1] it's written that "Then a generic configuration file
/etc/vz/vznetctl.conf must be created containing [...]" whereas it has
to be /etc/vz/vznet.conf since /usr/sbin/vznetcfg script has the
following line
VZNETCFG='/etc/vz/vznet.conf'
vzctl version is 3.0.26-1.
Best regards,
Nikolay.
[1] http://libvirt.org/drvopenvz.html
2006 Jul 18
2
how can I delete rows?
Hello, I am very new in R so I am so sorry for this question.
I have the Barro-Lee data set which contains 98 countries and I want to run the regressions only for the Latin America countries, so what do you recomend? How can I delete all the other countries or how can I select the countries of Lat. Am. thank you
this is the list of countries
SHCODE COUNTRY NAME WBCTRY
2007 Feb 28
4
"Any who has ever written an Ogg (de)muxer curses it's name frequently" (sic)
>From some random dude on Slashdot
[ http://yro.slashdot.org/comments.pl?sid=224420&cid=18177356 ]:
"Second, whether AVI is better or worse than Ogg is debatable. Any who
has ever written an Ogg (de)muxer curses it's name frequently. It's
extremely codec-specific, and the format is rather loosely defined,
with no consistent standard way to do much of anything....
AVI has
2007 Feb 28
4
"Any who has ever written an Ogg (de)muxer curses it's name frequently" (sic)
>From some random dude on Slashdot
[ http://yro.slashdot.org/comments.pl?sid=224420&cid=18177356 ]:
"Second, whether AVI is better or worse than Ogg is debatable. Any who
has ever written an Ogg (de)muxer curses it's name frequently. It's
extremely codec-specific, and the format is rather loosely defined,
with no consistent standard way to do much of anything....
AVI has
2005 Apr 07
1
Importing SAS transport data
I have encountered a problem reading SAS transport files on both a Mac
(OS X) and Linux (RedHat 9), both using R2.0.1.
After loading "foreign", the command:
read.xport("V1622101_050304.xpt")
yields:
Error in lookup.xport(file) : File not in SAS transfer format
In Linux, I can "cat" the file. The first few lines are:
**COMPRESSED** **COMPRESSED** **COMPRESSED**
2014 Jun 10
3
[LLVMdev] New Alias Analysis Algorithm
Hello LLVMDev,
I'm George, an intern for Google who will be working on LLVM. Currently,
I'm starting to implement a set-based Alias Analysis algorithm for LLVM,
which looks like it may be more accurate than Steensgard's, and can be
constructed in approximately nlog(n) time and linear space (n = number of
memory locations; queries happen in constant time). It will most likely be
2004 Jul 04
2
smooth non cumulative baseline hazard in Cox model
Hi everyone.
There's been several threads on baseline hazard in Cox model but I think
they were all on cumulative baseline hazard,
for instance
http://tolstoy.newcastle.edu.au/R/help/01a/0464.html
http://tolstoy.newcastle.edu.au/R/help/01a/0436.html
"basehaz" in package survival seems to do a cumulative hazard.
extract from the basehaz function:
sfit <- survfit(fit)
H
2003 Nov 21
1
: BIC for gls models
Hi all,
I would like to know how the BIC criterion is calculated for models estimated using gls( ) function. I read in Pinheiro & Bates (2000) p84 that
BIC = -2logL + npar*log(N) (for the ML method), or
BIC = -2logLR + npar*log(N-p) (for the REML method)
but when I use any of these formulae I don't obtain the result given by R.
Thanks in advance for any help.
Eve CORDA
Office national
2013 Apr 16
0
Model ranking (AICc, BIC, QIC) with coxme regression
Hi,
I'm actually trying to rank a set of candidate models with an information criterion (AICc, QIC, BIC). The problem I have is that I use mixed-effect cox regression only available with the package {coxme} (see the example below).
#Model1
>spring.cox <- coxme (Surv(start, stop, Real_rand) ~ strata(Paired)+R4+R3+R2+(R3|Individual), spring)
I've already found some explications in
2008 Jan 20
0
model selection method - step() or bic.glm()
Dear R-helpers,
I'm considering two methods of selecting a poisson regression model within
R:
1. Using the step() function (stats package) to find the best model by a
stepwise algorithm and AIC
2. Using the bic.glm() function (BMA package) to find the best model by
Bayesian Model Averaging and BIC
Are these both reasonable methods for model selection or is one clearly more
appropriate than
2009 Sep 05
2
About BIC
Hello,
I am working on getting optimal lags by using BIC, But I don't know
how to calculate BIC. Is there any code or useful function for it?
Thanks and regards,
Dan Zhao
2011 Dec 20
2
Extract BIC for coxph
Dear all,
is there a function similar to extractAIC based on which I can extract the
BIC (Bayesian Information Criterion) of a coxph model?
I found some functions that provide BIC in other packages, but none of them
seems to work with coxph.
Thanks,
Michael
[[alternative HTML version deleted]]
2003 Sep 29
1
BIC or AIC from nnet
Is AIC or BIC available when using the
nnet package?
Thank you
Paul Green
2001 Feb 22
1
bic.logit
I have been contacted by a researcher who would like to use the
bic.logit function (http://lib.stat.cmu.edu/S/bic.logit) for S-PLUS
which applies Bayesian Model Averaging to variable selection for
logistic regression. I can see that the S-PLUS function uses a call
to a Fortran "leaps" function, which does not seem to be available in
R.
Has this method or a similar method been ported to