Displaying 20 results from an estimated 120 matches similar to: "Predicting probabilities in ordinal probit analysis in R"
2009 May 03
1
Error running Knytt Stories
When I try to run the program Knytt Stories, I get an error window that says: "Cannot Load DirectoryPacker.mfx. This object might need an external program or library not yet installed." Wine helper says,
Code:
err:module:import_dll Library MSVCP60.dll (which is needed by L"C:\\windows\\temp\\mrt188.tmp\\DirectoryPacker.mfx") not found
fixme:heap:RtlCompactHeap (0x110000,
2017 Jun 17
0
Using mfx to create marginal effects
Dear all,
I am trying to estimate the marginal effects of a logit regression using the mfx package. It is crucial that the standard errors are clustered at the year level. Hence, the code looks as follows:
marginal.t24.2<-logitmfx(stock.market.crash~crash.t24+bubble.t24+RV.t24,data=Data_logitregression_lags, clustervar1 = "year")
2008 May 09
0
question on marginal effects
I have a question regarding calculating marginal effects (change in
the probability due to a one unit change in x) for a probit or for
that matter any discrete choice model. Does R have a function that
will essentially do this:
dE[y|x]
------- = f(x'beta)*beta
dx
Stata has a command called "mfx" that calculates the marginal effects
at the mean (of the x
2011 Feb 23
0
Over-constrained? gamma mixtures using R: mix{mixdist}
Dear R-help,
my aim is to fit a constrained 2 component gamma mixture using mix
within package mixdist. The constraints being fixing both of the means
and both of the sigmas. Thus the only unconstrained parameter I wish to
fit is pi the proportions of the mixtures.
This is the code I used:
PP2Pars<-data.frame(c(0.23,0.77), c(9.174,29.54), c(9.983,12.369));
2010 Aug 10
3
grep problem decimal points looping
Hi R Users,
I have been trying to work out how to rename column names using grep,
basically I have generated these column names using tapply:
[1] "NAME" "X1.1" "X2.1" "X3.1" "X4.1" "X5.1" "X6.1" "X7.1" "X8.1"
[10] "X1.2" "X2.2" "X3.2" "X4.2"
2020 May 13
0
Sometimes commands do not terminate after upgrading to R 4.0 and Ubuntu 20.04
Salut Adrien,
On 13 May 2020 at 14:19, Adrien FABRE wrote:
| I have upgraded R (from 3.6 to 4.0) and RStudio (from 1.1 to 1.2.5) a few
| days ago, and Ubuntu from 18.04 to 20.04 yesterday.
|
| Since then, R sometimes never terminates when executing certain commands:
| ivreg (from package AER), summary (of a logit regression) and logitmfx
| (from package mfx). Sometimes these commands run fine,
2020 May 13
3
Sometimes commands do not terminate after upgrading to R 4.0 and Ubuntu 20.04
I have upgraded R (from 3.6 to 4.0) and RStudio (from 1.1 to 1.2.5) a few
days ago, and Ubuntu from 18.04 to 20.04 yesterday.
Since then, R sometimes never terminates when executing certain commands:
ivreg (from package AER), summary (of a logit regression) and logitmfx
(from package mfx). Sometimes these commands run fine, but most of the time
I have to kill the process because R won't
2007 Jan 26
2
officejet 7310
Has anyone gotten centos 4 to print on an officejet 7310?
I have tried jetdirect with pcl and postcript no go...
I have tried smb but it does seem to be browsable as its not listed
and when I specify I enter the IP address for server and I dont
know what the share is.
Windows XP connects and prints fine.
THanks,
Jerry
2009 Nov 09
1
Percentage effects in logistic regression
Dear ALL,
I'm trying to figure out what the percentage effects are in a logistic
regression. To be more clear, I'm not interested in the effect on y of a
1-unit increase in x, but on the percentage effect on y of a 1% increase in
x (in economics this is also often called an "elasticity").
For example, if my independent variables are in logs, the betas can be
directly
2013 May 29
3
bootstrap
Hi,
You might need to check library(boot).? I have never used that before.? So, I can't comment much.? It is better to post on R-help list.? I had seen your postings on Nabble in the past.? Unfortunately those postings were not accepted in R-help.? You have to directly post at ? r-help at r-project.org after registering at:
https://stat.ethz.ch/mailman/listinfo/r-help
?
2011 Mar 11
0
predicting values from model function
Dear List,
I have fitted a spherical function to my variogram using "variofit(...)"
from GeoR. Now I would like to predict some data with the function
"predict(object,...)" from package stats. Does anyone know wether this
works and if it does how to do it?
Thanks a lot!
Anna
2011 Nov 18
0
Predicting response from new curves using fda package
Basically all I want to do is predict a scalar response using some
curves. I've got as far as doing a regression (using fRegress from the
fda package) but have no idea how to apply the results to a NEW set of
curves (for prediction).
I have N=536 curves, and 536 scalar responses. Here's what I've done so far:
* I've created a basis for the curves.
* I've created a
2002 Mar 15
1
predicting financial time series
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
What are the best tools (models within R) for use in predicting stock
market trading values? Currently I'm using the smooth.spline but are there
any others used in practice?
Do I find the mathematical formulations of R-functions somewhere (I now I
could deduct it from the source code algorithms but ...)? Of the
smooth.spline() for example?
Thank
2005 Mar 15
1
KNN one factor predicting problem
Could anybody help me out please?
> cl<-as.factor(traindata[,13])
> knn(traindata[1:295,2], newdata[1:32,2], cl,k=2,
prob=TRUE)
Error in knn(traindata[1:295, 2], newdata[1:32, 2],
cl, k = m, prob = TRUE) :
Dims of test and train differ
Both traindata and newdata have 13 elements. Only one
of the first 12 elemnets is needed to predict the 13
element.
What's the problem of
2003 Sep 29
0
predicting values from the LME
Dear listers,
I experinced a problem prdicting the values using the LME with multilevel
data.
I have NA's in my dependent variable and the model is fitted only on the
completed cases.
I want to estimate the predicted values for the rest of the data (those
cases with missing dep. variable)
I extracted a subset from the original file containing the variables used in
the model as well as the
2006 Feb 24
1
predicting glm on a new dataset
Hello together,
I would like to predict my fitted values on a new dataset. The original dataset consists of the variable a and b (data.frame(a,b)). The dataset for prediction consists of the same variables, but variable b has a constant value (x) added towards it (data.frame (a,b+x).
The prediction command returns the identical set of predicted values as for the original dataset yet I would have
2008 Jun 03
2
surprising predicting capabilities
Hi,
I noticed the following fortune in R 2.7 and 2.6.2:
fortune('Spreads')
If anything, there should be a Law: Thou Shalt Not Even Think Of Producing A
Graph That Looks Like Anything From A Spreadsheet.
-- Ted Harding (in a discussion about producing graphics)
R-help (August 2008)
Just wondering, what function and library gave this detailed prediction?
Cheers
2011 Dec 21
1
Predicting a linear model for all combinations
Lets say I have a linear model and I want to find the average expented
value of the dependent variable. So let's assume that I'm studying the
price I pay for coffee.
Price = B0 + B1(weather) + B2(gender) + ...
What I'm trying to find is the predicted price for every possible
combination of values in the independent variables.
So Expected price when:
weather=1, gender=male
weather=1,
2012 Jun 29
1
predicting expected number of events using a coxph model
I fit a coxph model:
coxphfit <- coxph(Surv(sampledLifetime, !sampledCensoredQ) ~ curpbc6 +
prevpbc6, sampledTimeSeries)
Now I'm trying to predict the expected number of events using a new dataset.
The documentation suggests that
coxPred <- predict(coxphfit, newdata = testTimeSeries, type="expected")
will do what I want, but I get the error
Error in
2012 Sep 28
0
Text mining? Text manipulation? Both? Predicting KRAS test results in cancer patients
Happy Friday Everyone,
?
Hope Friday afternoon doesn't turn out to be a terrible time to post a question. I've been doing a little data mining of patient text medical records as of late. I started out trying to predict whether or not cancer patients had received KRAS mutation testing and did quite well with that. Now I'm trying to predict the results of KRAS testing (mutated?vs. wild