Displaying 20 results from an estimated 4000 matches similar to: "Panel MNP"
2005 Jul 13
1
problems with MNP
Hi all,
Does anybody have a hint on what may be going wrong in this R code? I
mimic the sample code from the MNP developers but I seem unable to get the
choice specific variables right.
Thanks,
Joan Serra
> rm(list=ls())
> library(foreign)
> small<-read.spss("small.sav")
Warning message:
small.sav: Unrecognized record type 7, subtype 13 encountered in system
file.
>
2004 Dec 03
3
multinomial probit
Hello All,
I'm trying to run a multinomial probit on a dataset with 28 data
points and five levels (0,1,2,3,4) in the latent choice involving
response variable.
I downloaded the latest mnp package to run the regression. It starts
the calculation and then crashes the rpogram. I wish I could give the
error message but it literally shuts down R without a warning.
I'm using the R
2005 Apr 03
1
wrong signs using MNP.
Hi,
I recently found the MNP package. Out of curiosity, I tried to reproduce
results from Greene (Econometric Analysis, fourth edition) on page 874.
The signs of the estimates are all opposite those of Greene's table. Might
anyone be able to tell me what I am doing wrong?
I have attached the function call, the coefficients, and a few rows of the
data. The dataset has 210 observations.
2005 Nov 21
2
Multinomial Nested Logit package in R?
Dear R-Help,
I'm hoping to find a Multinomial Nested Logit package in R. It would
be great to find something analogous to "PROC MDC" in SAS:
> The MDC (Multinomial Discrete Choice) procedure analyzes models
> where the
> choice set consists of multiple alternatives. This procedure
> supports conditional logit,
> mixed logit, heteroscedastic extreme value,
2006 Jan 11
1
Log-likelihood for Multinominal Probit Regression Model
I use mnp to run a multinominal probit regression model, but the summary
doesn't contain the model statistics, such as the log-likelihood and degree
of freedom, for the assessment of the goodness-of-fit of the fitted model.
Is there any way that I can generate these statistics for the fitted model
in R?
Many thanks in advance!
SC
2009 Aug 31
1
Probit function
Hello,
I want to start testing using the MNP probit function in stead of the
lrm function in my current experiment.
I have one dependant label and two independent varaibles.
The lrm is simple
model <- lrm(label ~ val1 + val2)
I tried the same thing with the mnp function and got an error that I
don't understand
model <- mnp(label ~ val1 + val2)
I get back an immediate error that
2004 Jun 29
0
MNP
We would like to announce the release of our software, which is now
available through CRAN.
MNP: R Package for Fitting the Multinomial Probit Models
Abstract:
MNP is a publicly available R package that fits the Bayesian multinomial
probit models via Markov chain Monte Carlo. Along with the standard
multinomial probit model, it can also fit models with different choice
sets for each observation,
2004 Jun 29
0
MNP
We would like to announce the release of our software, which is now
available through CRAN.
MNP: R Package for Fitting the Multinomial Probit Models
Abstract:
MNP is a publicly available R package that fits the Bayesian multinomial
probit models via Markov chain Monte Carlo. Along with the standard
multinomial probit model, it can also fit models with different choice
sets for each observation,
2009 Feb 13
0
Difference MNP-package and rmnpGibbs from bayesm-package
Hi all,
For my research I have to use a Multinomial Probit model. I saw that
there are two packages, that include a method to estimate my
parameters. The first one is the MNP-package of Imai and van Dyk. The
second one is part of the bayesm-package of Rossi.
The results for both packages are not the same using the same data.
Does anybody know what the difference is between these two approaches?
2012 Aug 10
2
Simple question about formulae in R!?
Good morning reader,
I have encountered a, probably, simple issue with respect to the *formulae* of
a *regression model* I want to use in my research. I’m researching
alliances as part of my study Business Economics (focus Strategy) at the
Vrije Universiteit in Amsterdam. In the research model I use a moderating
variable, I’m looking for confirmation or help on the formulation of the
model.
2006 Jan 22
1
Application of R and MNP
Dear all,
I'm a new user of R and MNP. Would anybody advise me what I have done wrong
to the input or data. When I add the R7, it said that there is an error
"SWP:singular matrix". I can add up to R6 only. Copy of the R console is
attached for your reference.
Thanks.
Andy
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2004 Nov 30
1
(no subject)
Hello,
I am trying to estimate a choice model with varying choice set for each
individual.
I would like to fit different kinds of model (logit ,nested logit,
probit...).
So far I have found that package *mnp* allows me to estimate a probit model
with varying choice set.
But for estimation of a logit model, I have only found function *multinom*
of package *nnet* which does not seem to allow for
2012 Mar 06
1
Reshape question
I have a data frame in wide format. There are six variables that represent two factors in long format 3x2, Valence and Temperature:
> head(dpts)
File Subj Time Group PainNeg.hot PainNeg.warm SociNeg.hot SociNeg.warm Positiv.hot Positiv.warm Errors
1 WB101_1_1_dp.txt 101 1 MNP 30.700000 13.75000 16.319048 35.166667 30.18333 14.383333 1
2
2005 Dec 15
0
MNP - discrete choice experiment
Hello,
I need a little initial help with the MNP package.
I am trying to analyze a discrete choice experiment with the following
settings:
- choice sets consist of 3 alternatives
- choice alternatives are constructed by e.g. two attributes, say brand and
price.
- brand has three levels and price has four levels
- every respondent has to answer 4 different choice sets (drawn randomly or
2004 Sep 22
2
ordered probit and cauchit
What is the current state of the R-art for ordered probit models, and
more
esoterically is there any available R strategy for ordered cauchit
models,
i.e. ordered multinomial alternatives with a cauchy link function. MCMC
is an option, obviously, but for a univariate latent variable model
this seems
to be overkill... standard mle methods should be preferable. (??)
Googling reveals that spss
2007 Jun 15
0
Coefficients and Covariances in MNP
Hi everyone,
I use the MNP package to fit my data. I can interpret the coefficients and
covariance. I cannot put them into the original model which is
Wi=Sum(bXij) over j,
Yi(Wi)=0 if max(Wi)<0, j if max(Wi)=Wij>0
j=3 here, 3 choice alternatives, Clio, Punto, Polo
I don't know how to put the coefficients and covariances into W, to
construct W for each j.
The coefficients and
2000 Oct 24
2
multinominal probit & logit
Dear everybody!
Are there algorithms for multinominal logit/probit available for R? Is it my
fault that I cannot find these in CRAN? Has somebody programmed these?
with best wishes
Ott Toomet
Ott.Toomet at mail.ee
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r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info",
2003 Feb 19
1
Multiple Logit/Probit
Does anybody know how to do multiple logit/probit analysis with R?
Thanks in advance!
2007 Sep 05
1
ecological meaning of randomForest vegetation classification?
Hi, everyone,
I haven't found anything similar in the forum, so here's my problem (I'm no
expert in R nor statistics):
I have a data set of 59.000 cases with 9 variables each (fractional
coverage of 9 different plant types, such as deciduous broad-leaved
temperate trees or evergreen tropical trees etc.), which was generated by a
vegetation model.
In order to evaluate the quality of
2010 Oct 31
1
Questions about Probit Analysis
Dear All,
I have some questions about probit regressions.
I saw a nice introduction at
http://bit.ly/bU9xL5
and I mainly have two questions.
(1) The first is almost about data manipulation. Consider the following
snippet
##################################################
mydata <- read.csv(url("http://www.ats.ucla.edu/stat/r/dae/binary.csv"))
names(mydata) <-