Your professor should immediately recognize that the quoted code is standard
regression input/output and that the Urkund results in this case are without
merit.
> On Sep 22, 2015, at 7:27 AM, BARRETT, Oliver wrote:
>
>
> Dear 'R' community support,
>
>
> I am a student at Skema business sc
ber of blocks up to 50:
tempDes <- tradeoff.des(20, 4, 50, 2, "tempDesign.txt", 20, NULL, TRUE)
…I get the same error.
What is the correct way to use choiceDes to design a MaxDiff experiment of this
kind?
Thanks very much in advance to all for any thoughts or info!
Best,
-V
ber of blocks up to 50:
tempDes <- tradeoff.des(20, 4, 50, 2, "tempDesign.txt", 20, NULL, TRUE)
…I get the same error.
What is the correct way to use choiceDes to design a MaxDiff experiment of this
kind?
Thanks very much in advance to all for any thoughts or info!
Best,
-V
Worst
Is it possible to use the R-Project Conjoint Package with a data file like
this, to calculate respondent-level utility values? In other words, are the
scores (100, 50, 0) input that the Conjoint Package can use?
Thanks very much in advance to all for any info!
Best,
-Vik
_
= Worst
Is it possible to use R-Project Conjoint Package with such a data file, to
calculate respondent-level utility values?
Thanks very much in advance to all for any info!
Best,
-Vik
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Bhupendrashinh, thanks again for telling me about RWeka. That made a big
difference in a job I was working on this week.
Have a great weekend.
-Vik
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PLEASE do read the
+ SPED, data = respLevel)
...I get an error message:
Error in gsub(":", ".", x, fixed = TRUE) :
input string 18 is invalid in this locale
What is the correct way to use the C5.0 method for class 'formula'?
-Vik
On Sep 21, 2012, at 4:18 AM, mxkuhn wrote:
&g
gt;
> Please let us know your findings. All the best.
>
> Best Regards,
>
> Bhupendrasinh Thakre
> Sent from my iPhone
>
> On Sep 21, 2012, at 12:16 AM, Vik Rubenfeld wrote:
>
>> Bhupendrashinh, thanks very much! I ran J48 on a respondent-level data set
ere a way to further prune the tree so that I can present a chart that
would fit on a single page or two?
Thanks very much in advance for any thoughts.
-Vik
On Sep 20, 2012, at 8:37 PM, Bhupendrasinh Thakre wrote:
> Not very sure what the problem is as I was not able to take your data for
Thanks! Here's the dput output:
> dput(test.df)
structure(list(BRND = structure(c(1L, 12L, 16L, 17L, 18L, 19L,
20L, 21L, 22L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 9L, 10L, 11L, 13L,
14L, 15L), .Label = c("Brand 1", "Brand 10", "Brand 11", "Brand 12",
"Brand 13", "Brand 14", "Brand 15", "Brand 16", "Bran
t using:
> plot(testTree)
> text(testTree)
...I get a tree with one branch.
It looks to me like I'm doing everything right, and this data is just not
capable of predicting brand preference.
Am I missing anything?
Thanks very much in advance for a
In a Conjoint study, it's difficult for respondents to evaluate more than 6
product attributes at a time. Some studies require more attributes.
Often this is solved via the use of Adaptive Conjoint Analysis (ACA), in which
the questionnaire is modified for each individual respondent as the surv
I would like to find out how to apply commands found in the bayesm package, to
analyze data gathered via a choice-based conjoint study. Is there a web
resource where I can seek an R-Project consultant experienced in this, who I
could hire to walk me through the appropriate bayesm commands to use
Got it. Thanks so much for your help, Michael and Sarah!
Best,
-Vik
On Aug 3, 2012, at 11:50 AM, R. Michael Weylandt wrote:
> On Fri, Aug 3, 2012 at 1:34 PM, Sarah Goslee wrote:
>> On Fri, Aug 3, 2012 at 2:23 PM, R. Michael Weylandt
>> wrote:
>>> With conjoint_1.
[1] tools_2.15.1
>
Per your recommendation, I have read the Posting Guide, and have sent an email
to the Maintainers of this packages as well.
Best,
-Vik
On Aug 3, 2012, at 11:15 AM, Sarah Goslee wrote:
> Hi,
>
> On Fri, Aug 3, 2012 at 1:57 PM, Vik Rubenfeld wrote:
>> Thanks ve
+ kind = c("bags", "granulated", "leafy"),
+ aroma = c("yes", "no"))
> design<-caFactorialDesign(data=experiment, type="orthogonal")
Error: could not find function "caFactorialDesign"
What could I be missing?
Best,
-Vik
On
I'm trying to run the "Conjoint" package, and I receive the error:
Error: could not find function "caFactorialDesign"
I'm running R version 2.15.1 on Mac OS X. I have installed the "Conjoint"
package with the "Install Dependencies" checkbox checked. I have clicked the
"Update All" button
Thanks very much for this great info, Ista.
Best,
-Vik
On Sep 26, 2010, at 12:10 PM, Ista Zahn wrote:
> Hi Vik,
> I suggest reading through some of the introductory documentation. R
> has several classes of objects, including matrix, list, data.frame
> etc. and a basic understan
[Sorry- somehow the first time I posted this it got attached to another thread
-Vik]
I am successfully performing a correspondence analysis using the commands:
NonLuxury <- read.table("/Users/myUserName/Desktop/nonLuxury.data.txt")
ca(NonLuxury)
I would like
rect way to do this?
Thanks in advance to all for any info.
-Vik
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, mini
Thanks very much.
-Vik
On Sep 26, 2010, at 9:45 AM, Chris Mcowen wrote:
> Have you loaded the library after installing it?
>
> Either use > library(CA)
>
> Or
>
> Through the package manager tab
>
> Hth
> Sent from my iPhone
>
> On 26 Sep 2010, at
he CA manual appears to suggest that the following line should come next:
> ca(NonLuxury)
Again, I get the error message:
Error: could not find function "ca"
What am I missing? Thanks very much in advance to all for any info.
-Vik
___
again.
On Thu, Oct 1, 2009 at 1:06 PM, Charles C. Berry wrote:
> On Thu, 1 Oct 2009, Vik wrote:
>
> Hello,
>>
>> I am trying to figure out how to use optimize() with array variables
>> as inputs. I have a for loop in the function definition:
>>
>> SS <- fun
Hello,
I am trying to figure out how to use optimize() with array variables
as inputs. I have a for loop in the function definition:
SS <- function(int,slo,x,y){
for(i in 1:length(x)) ((int+slo*x[i])-y[i])^2->squares[i]
sum(squares)->>sum_squares
output_txt = c ("The sum of squares is", sum_squar
On 3/7/08, Prof Brian Ripley <[EMAIL PROTECTED]> wrote:
> > Today HTML help stopped working. The menu command "Help > Html help"
> usually
> > brings up my default web browser (Opera 9.26), but now R gives the error
> > Error: file association for 'doc\html\index.html' not available or invalid
r the error turns up nothing,
and I have no idea where to look for further diagnosis. I have uninstalled,
deleted the R package directories, and checked the registry for metions of
"\R\", but the problem remains. I can't think of any unusual changes I made
before this p
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