Displaying 20 results from an estimated 1566 matches for "multivariated".
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multivariate
2005 Jan 13
2
multivariate diagnostics
Hi, there.
I have two questions about the diagnostics in multivarite statistics.
1. Is there any diagnostics tool to check if a multivariate sample is from
multivariate normal distribution? If there is one, is there any function
doing it in R?
2. Is there any function of testing if two multivariate distribution are
same, i.e. the multivariate extension of Kolomogrov-Smirnov test?
Thanks for
2010 Aug 27
2
multivariate distributions
Hi,
How can I generate data from multivariate gamma distribution & multivariate
beta distribution?
I only found command for multivariate normal only.
Many thanks in advance :)
Regards
Rofizah
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2010 Aug 24
3
generate random numbers from a multivariate distribution with specified correlation matrix
Hi all,
rmvnorm()can be used to generate the random numbers from a multivariate
normal distribution with specified means and covariance matrix, but i want
to specify the correlation matrix instead of covariance matrix for the
multivariate
normal distribution.
Does anybody know how to generate the random numbers from a multivariate
normal distribution with specified correlation matrix? What about
2011 Mar 03
2
Multivariate Granger Causality Tests
Dear Community,
For my masters thesis I need to perform a multivariate granger causality
test. I have found a code for bivariate testing on this page
(http://www.econ.uiuc.edu/~econ472/granger.R.txt), which I think would not
be useful for the multivariate case. Does anybody know a code for a
multivariate granger causality test. Thank you in advance.
Best Regards
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2011 Nov 01
2
multivariate random variable
Dear All,
How can I generate multivariate random variable (not multivariate normal )
I am in urgent
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2000 Nov 14
1
mvtnorm
Announcement: mvtnorm
Multivariate Normal and T Distribution
mvtnorm implements two R functions for the computation of the multivariate t
and normal distribution:
pmvt: Computes the the distribution function of the multivariate t
distribution for arbitary limits, degrees of freedom and
correlation matrices based on algorithms by Genz and Bretz.
pmvnorm: Computes the distribution
2000 Nov 14
1
mvtnorm
Announcement: mvtnorm
Multivariate Normal and T Distribution
mvtnorm implements two R functions for the computation of the multivariate t
and normal distribution:
pmvt: Computes the the distribution function of the multivariate t
distribution for arbitary limits, degrees of freedom and
correlation matrices based on algorithms by Genz and Bretz.
pmvnorm: Computes the distribution
2013 Mar 15
1
metafor - multivariate analysis
Dear Metafor users, I'm conducting a metaanalysis of prevalence of a particular behaviour based on someone elses' code. I've been labouring under the impression that this:
summary(rma.1<-rma(yi,vi,mods=cbind(approxmeanage,interviewmethodcode),data=mal,method="DL",knha=F,weighted=F,intercept=T))
is doing the multivariate analysis that i want, but have read that
2007 Nov 11
5
Multivariate time series
Hello to everyone!
I have a question for you..I need to predict multivariate time series, for
example sales of 2 products related one to the other, having the 2 prices
like inputs..
Is there in R a function to do it? I saw dse package but I didn't find what
a I'm looking for..
Could anyone help me?
Thank you very much
Giusy
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2005 May 03
1
multivariate Shapiro Wilks test
Hello,
I have a question about multivariate Shapiro-Wilks test.
I tried to analyze if the data I have are multivariate normal, or how
far they are from being
multivariate normal. However, any time I did
>mshapiro.test(mydata)
I get the message:
Error in solve.default(R %*% t(R), tol = 1e-18) :
system is computationally singular: reciprocal condition number
= 5.38814e-021
I tried
2011 Feb 08
1
Simulation of Multivariate Fractional Gaussian Noise and Fractional Brownian Motion
Dear R Helpers,
I have searched for any R package or code for simulating multivariate
fractional Brownian motion (mFBM) or multivariate fractional Gaussian noise
(mFGN) when a covariance matrix are given. Unfortunately, I could not find
such a package or code.
Can you suggest any solution for multivariate FBM and FGN simulation? Thank
you for your help.
Best Regards,
Ryan
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Wonsang You
2009 Apr 24
1
Terminology: Multiple Regression versus multivariate Regression
Hello R-Members,
can anyone explain the difference between
multiple and multivariate regression to me
in terms of the terminology and eventually
its respect to the mathematical foundation
respectively ?
Is multiple regression perhaps more related to GLM
and multivariate Regression rather applied,
if there are no explizit numeric factor levels ?
Thanks for elucidations on that topic.
Many
2004 Jul 04
2
doubly multivariate analysis in R
20 subjects were measured in 5 conditions (thus repeated measures) and
for each subject in each condition there are 4 response measures (thus
multivariate as it is a combined score that needs to be compared across
the conditions).
So, using a multivariate approach to repeated measures this is a doubly
multivariate analysis.
I would appreciate any suggestions as to the best way to do such a
2012 Jun 15
2
Multivariate Normal and loops
Hi,
i'm not english and i'm not very familiar to R, and i'm asking if you can
help me.
I'm wondering how to create a multivariate normal an then repeat this for a
sample of T=1000, and the save this result.
Thank you very much for your helping
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2009 May 27
1
Multivariate Transformations
Hello folks,
many multivariate anayses (e.g., structural equation modeling) require
multivariate normal distributions.
Real data, however, most often significantly depart from the multinormal
distribution. Some researchers (e.g., Yuan et al., 2000) have proposed a
multivariate transformation of the variables.
Can you tell me, if and how such a transformation can be handeled in R?
Thanks in
2004 Jan 20
1
evaluation of discriminant functions+multivariate homoscedasticity
Hello,
I am switching from SPSS-Windows to R-Linux. My university is very
SPSS-oriented so maybe that's the cause of my problems. I am a beginner
in R and my assignments are SPSS-oriented, so I hope I don't annoy
anyone with my questions...
Right now I've got 2 problems:
-I have to evaluate discriminant functions I have calculated with
lda(MASS). I can't find a measure that
2006 Jun 19
5
multivariate splits
Dear R users!
Does someone know about any algorithms / packages in R, that perform
classification / regression / decision trees using multivariate
splits?
I have done some research, but I found nothing. Packages "tree" and
"rpart" seem only to be able to do CART with univariate splits.
Thank you for your help!
B?lint
--
Cz?cz B?lint
PhD hallgat?
BCE KTK Talajtan ?s
2010 Jan 05
1
Multivariate Poisson GLM??
Dear R Users,
I'm working on a problem where I have a multivariate response vector of
counts and a continuous predictor.
I've thought about doing this the same way you would do a Multvariate
regression model with normally distributed data, but since these data are
counts, they are probably better modeled with a Poisson distribution.
For example
y1<-rpois(100,3.5)
y2<-rpois(100,1.5)
2007 Apr 02
2
Multivariate GARCH model in R
Hi R users,
Heard that I can't use multivariate GARCH model in R because
R has only univariate GARCH models.... So, how can I run a multivariate
GARCH model in R?
Also, SPLUS has this utility...any ideas how can I use it in R?
Thanks
Shubha
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2009 Nov 03
1
multivariate numerical integration.
I am currently using the package 'adapt' for multivariate integration.
However this package seems to be removed from CRAN (It is still referred to
in the help file for integrate(stats) though).
I assume it has been deprecated for a reason? Is there an alternative for
multivariate numerical integration?
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Jeroen Ooms * Dept. of Methodology and Statistics * Utrecht University
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