Displaying 20 results from an estimated 1000 matches similar to: "Can anyone suggest some r packages for Experimental Designs, specifically for choice and conjoint??? (or is intersted in helping me make 1)"
2012 Sep 13
1
fractional balanced design conjoint analysis
L.S.
We would like to generate fractional design for a conjoint analysis. For example we would like to reduce 2x2x2x2x3 --> 12-16 profiles. We tried the R-package "conjoint" and we found an article which describes how to make fractional design for these kinds of studies with Algdesign:
http://tolstoy.newcastle.edu.au/R/e10/help/att-8876/DCE_with_R.pdf
However, the generated
2010 Jun 14
3
Design of experiments for Choice-Based Conjoint Analysis (CBC)
Hello,
I would like to know if there is any function in R which allows to make
designs of experiments for Choice-Based Conjoint studies ?
I have already checked the topic on " design of experiments with R " and
looked at the different libraries.
I tried to make my design with the "optFedorov" function but I haven't found
how it can allow to have balanced design (with the
2004 Oct 09
2
inst directory
R CMD check on a Windows system, halts with the following;
installing inst files
FIND: Parameter format not correct
make[2]: *** [C:/AlgDesign/AlgDesign.Rcheck/AlgDesign/inst]Error 2
make[1] *** [all] Error 2
make: *** [pkg-AlgDesign] Error2
*** Installation of AlgDesign failed ****
The inst directory contains the sub directory doc with a pdf and dvi
file. Any sub directory in inst seems to
2007 Aug 28
2
Experimental Design with R
Dear R-users,
I want to know if there is a package that allows to define different experimental designs (factorial, orthogonal, taguchi)
and to compare them.
I don't found one in the R-web site, but it is possible I missed it!
Thank you in advance
Sincerely,
Marc
2009 Sep 28
1
model.matrix troubles with AlgDesign
Dear DevelopeRs,
in continuing with my suite of packages on experimental design, I am stuck
with an issue that appears to be related to package AlgDesign - I have tried
to get it solved by Bob Wheeler, but he seems to be stuck as well.
Whenever AlgDesign is loaded, some of my code does not work any more. For
example, in a fresh R session:
require(DoE.base)
fac.design(nlevels=c(2,6,2))
2004 Mar 31
2
choice-based conjoint
Hello everyone,
I am new to this list and the R-Project, so I hope my question is not
trivial or has been answered before. I searched the FAQs and the mailing
list archives and I could not find anything about Conjoint Analysis. I am
especially interested in Choice-based Conjoint, resp. discrete choice
models.
Is there a function / module that handles this issue? Or can the multinomial
logit
2011 Nov 24
1
AlgDesign - $D $A $Ge $Dea
Hi,
I am wondering how I should interpreate the output of optFederov() in AlgDesign.
Specially I want to know what is $D, $A, $Ge and $Dea, which one I can use as an efficiency to say how good the optimal design is.
I only know when a orthogonal design comes, $D = 1.
I red the pdf document -- vignette("AlgDesign")
[Just type: vignette("AlgDesign") in R, you will get
2009 Nov 18
1
Link to pdf documentation from other package ?
Dear developeRs,
I have not found anything recent about how to link to a vignette or other
documentation from within Rd-files. Is this now possible with the new help
system ? For example, I would like to link to the file AlgDesign.pdf
provided within the doc directory of package AlgDesign.
Thanks for any suggestions,
regards, Ulrike
--
View this message in context:
2007 Mar 21
1
package:AlgDesign and .Random.seed
Dear r-helpers,
Could you please help me solve the following problem: When I run
require(AlgDesign)
trt <- LETTERS[1:5]
blk <- 10
trtblk <- 3
BIB <- optBlock(~., withinData = trt, blocksizes = rep(trtblk, blk))
In response to the last command, R complains:
Error in optBlock(~., withinData = trt, blocksizes = rep(trtblk, blk)) :
object ".Random.seed" not found
The
2009 Jun 22
5
Convert "ragged" list to matrix
Hi,
I have a list made up of character strings with each item a different
length (each item is between 1and 6 strings long). Is there a way to
convert a "ragged" list to a matrix such that each item is its own row?
Here is a simple example:
a=list();
a[[1]] = c("a", "b", "c");
a[[2]] = c("d", "e");
a[[3]] = c("f",
2007 Apr 30
1
mirror's choice when installing a package for R-2.5.0 (PR#9643)
Hello,
Just a quick message to say that,
------------------------------------------------------------------------
-------
when choosing (with or without the tcltk window) "Bern 1 (swiss)" as
CRAN mirror to install
a package (function install.packages) for R-2.5.0, the list of
available packages
for osx seems not complete:
AMORE, AdaptFit, AlgDesign, AnalyzeFMRI, SemiPar,
2007 Oct 09
2
AlgDesign--exact and approximate design
Hi
I am trying to generate a design using Algdesign and came across terms of
"exact design" and "approxiamte theory design", I did not find a reference
to explain what they are, could some one shed some light about this on me?
Another question is, I want to measure the main effects and at least two
interactions, variables are factors, how do I ensure this in formula,
2007 Oct 10
2
how to generate and evaluate a design using Algdesign
Hi,
I have some problems when using AlgDesign->optFederov() generating
designs.
I have 6 variables, all factors. 3^2 and 4^4, I want to have a design that
can take care of main effects and two interactions within 2 pair of
variables v3-v4 and v5-v6, the following is the code
################
require(AlgDesign)
set.seed(1)
levels = c(v1=3,v2=3, v3=4,v4=4,v5=4,v6=4)
2008 Apr 21
3
optFederov/AlgDesign - help avail?
Hello, we are needing to generate optimal (Fractional) designs for
discrete choice applications, where we will be using logistic regression
or multinomial logit as the modeling technique.
It looks like optFederov, in the AlgDesign package may work, but not
sure if this algorithm works when the variable of interest is binary or
nominal?
Anyone who are experts in this area, anyone interested
2006 Mar 05
1
optimal factorial designs
Hi All,
recently I used Design Expert for some Design Of Experiment work.
I was happy with the interface to select which effects I want to see in my experiment, and which not.
For example: I can select of course my main effects, but also if I want to see interaction A:B, B:C, A:B:C,but not A:C.
This was very interessting as you can end up with fewer runs, especially in cases of 10 factors with
2010 Oct 04
3
can't find and install reshape2??
Hi everyone,
I’m trying to install reshape2.
But when I click on “install package” it’s not coming up!?!?! I’m getting
reshape, but no reshape2?
I’ve also tried download.packages(reshape2, destdir="c:\\") &
download.packages(Reshape2, destdir="c:\\")…but no luck!!!
Does anyone have any ideas what could be going on?
Chris Howden
Founding Partner
Tricky
2005 Apr 22
3
Error when downloading and installing ALL R packages
Hi,
after updating to 2.1 (see below) I am no longer able to install all
R packages as mentioned at
<http://support.stat.ucla.edu/view.php?supportid=30>.
After finishing the download, I received the following error:
[...]
trying URL
'http://www.stats.ox.ac.uk/pub/RWin/bin/windows/contrib/2.1/xgobi_1.2-
13.zip'
Content type 'application/zip' length 102623 bytes
opened
2010 Oct 12
2
merging and working with BIG data sets. Is sqldf the best way??
Hi everyone,
I’m working with some very big datasets (each dataset has 11 million rows
and 2 columns). My first step is to merge all my individual data sets
together (I have about 20)
I’m using the following command from sqldf
data1 <- sqldf("select A.*, B.* from A inner join B
using(ID)")
But it’s taking A VERY VERY LONG TIME to merge just 2 of the datasets
2010 Jun 24
1
BBH2 and FrF2 packages
Hi R HELP,
I consider the 2^3 factorial experiment described at page 177 of
the book Statistics for Experimenters: Design, Innovation, and Discovery
by George E. P. Box, J. Stuart Hunter, William G. Hunter (BHH2).
This example use the following data in file BHH2-Data/tab0502.dat
at ftp://ftp.wiley.com/
in /sci_tech_med/statistics_experimenters/BHH2-Data.zip
run T C K y
1 1 -1 -1 -1 60
2
2010 Sep 01
8
how to replace NA with a specific score that is dependant on another indicator variable
Hi everyone,
I’m looking for a clever bit of code to replace NA’s with a specific score
depending on an indicator variable.
I can see how to do it using lots of if statements but I’m sure there most
be a neater, better way of doing it.
Any ideas at all will be much appreciated, I’m dreading coding up all those
if statements!!!!!
My problem is as follows:
I have a data set with