Displaying 20 results from an estimated 50000 matches similar to: "Multivariate testing or Taguchi Testing on Ruby?"
2006 Dec 07
1
Taguchi Design
Dear R Users,
If it is possible, i would like to learn whether a R package that can be
used for Taguchi design is available.
Sincerely
--
Ýbrahim Mutlay
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2006 Mar 09
0
Multivariate Autoregressive Model calibration and residual testing
Hi,
I am using the mAr package to calibrate an Multivariate model (size 3,
order 12). I am trying to do the two following things:
1. I would like to calibrate the model using not a single time
series, but several of them: each time series should be seen as one
"independent" realisation of the mAr process; for instance this happens
when you have a time series with lacking data
2006 Apr 05
2
Multivariate linear regression
Hi,
I am working on a multivariate linear regression of the form y = Ax.
I am seeing a great dispersion of y w.r.t x. For example, the
correlations between y and x are very small, even after using some
typical transformations like log, power.
I tried with simple linear regression, robust regression and ace and
avas package in R (or splus). I didn't see an improvement in the fit
and
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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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
2010 May 25
1
multivariate nonparametric test
Hi,
I am doing my PhD and I usually use SPSS however now I need to do some
multivariate nonparametric tests but SPSS don?t work with this. Recently I
was aware of R and I saw that is possible using the MNM pack to perform
multivariate nonparametric tests. I am learning step by step how to work
in R meanwhile I need to perform the multivariate nonparametric tests for my
PhD and I have no idea
2007 Nov 14
0
Hottelings T2-test for multivariate lingitudinal data
Dear R-users
I've simulated a longitudinal multivariate normal data set from which
I've simulated missing-patterns such as MCAR MAR and a simple kind of
non-MAR. I've imputated the values so I now have 'complete' data sets. I'm
trying to perform a T2-test as done in the multivariate case under th
enormal assumption. Is there something I've to think about when performing
2008 May 29
1
test for multivariate normality?
My stat textbook tells me that using Shapiro-Wilk test for each variable
one by one is not equal to a test for multivariate normality as a whole.
Does R have a function of testing for multivariate normality? Thanks.
Hongsheng (Hank) Liao, Ph.D.
Lab Manager
Center for Quantitative Fisheries Ecology
800 West 46th Street
Old Dominion University
Norfolk, Virginia 23508
Phone:757.683.4571
2006 Jun 29
0
multivariate normality test
Hello,
Could someone help me to explain the VERY big difference in applying two
tests on multivariate normality:
library(mvnormtest)
data(EuStockMarkets)
mshapiro.test(t(EuStockMarkets[15:29,1:4]))
Shapiro-Wilk normality test
data: Z
W = 0.8161, p-value = 0.005955
and
library(energy)
mvnorm.etest( EuStockMarkets[15:29,1:4] )
Energy test of multivariate normality:
2017 Jul 11
0
Multivariate random forests in R - how to obtain variance explained for multiple responses in randomForestSRC package - or other package
Hello,
I am wanting to use MRF to do multivariate regression.
We are testing whether acoustic indices can predict structure (relative abundances) of vocalising avian community in UK and Ecuador.
There are 26 acoustic indices, 65 UK species and 95 Ecuadorian species.
I want to build a model for each ecozone (UK/ EC) using all species (relative abundance) as response matrix, and acoustic indices as
2005 May 07
1
Test on mu with multivariate normal distribution
Dear WizaRds,
I am sorry to bother you with a newbie question, but although I tried to solve my problem using the various .pdf files (Introduction, help pages etc.), I have come to a complete stop. Please be so kind as to guide me a little bit along my way of exploring multivariate analysis in R.
I want to test wether the means-vector mu1 of X, consisting of the means per column of that matrix
2006 Mar 13
0
wishlist: function mlh.mlm to test multivariate linear hypotheses of the form: LBT'=0 (PR#8680)
Full_Name: Yves Rosseel
Version: 2.2.1
OS:
Submission from: (NULL) (157.193.116.152)
The code below sketches a possible implementation of a function 'mlh.mlm' which
I think would be a good complement to the 'anova.mlm' function in the stats
package. It tests a single linear hypothesis of the form H_0: LBT'= 0 where B is
the matrix of regression coefficients; L is a matrix
2010 Dec 01
0
Multivariate time series - Poisson with delayed lags
Hi all,
How can a multivariate Poisson time series be modeled? Aspects of glm,
forecast, dse and dynlm seem relevant but not quite complete--but hopefully
what I am missing is how to assemble them effectively. What I am looking to
do is model my dependent variable y_t as a Poisson family function of lags
of several independent variables and lags of y_t. I would like to include
all lags up
2006 Jun 20
0
FW: multivariate splits
-----Original Message-----
From: Vayssi?res, Marc
Sent: Tuesday, June 20, 2006 9:35 AM
To: 'r-help-bounces at stat.math.ethz.ch'
Subject: RE: [R] multivariate splits
Glen De'ath's package for R is on cran! It is called mvpart, see:
http://cran.cnr.berkeley.edu/doc/packages/mvpart.pdf
Cheers,
Marc Vayssi?res
-----Original Message-----
From: r-help-bounces at stat.math.ethz.ch
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
-----
Wonsang You
2009 Mar 31
1
Jarque-Bera test and Ljung-Box test for multivariate time series
Hi!
I know that there is function in fBasics package for univariate Jarque-Bera
test and a funtion for univariate Ljung-Box test in stats package. But I am
wondering if there is a function somewhere to do the tests for multivariate
time series?
Thanks,
John
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2013 Mar 07
2
Multivariate Power Test?
Generic question... I am familiar with generic power calculations in R,
however a lot of the data I primarily work with is multivariate. Is there
any package/function that you would recommend to conduct such power
analysis? Any recommendations would be appreciated.
Thank you for your time,
Charles
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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
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 Jul 30
1
COXPH: how to get the score test and likelihood ratio test for a specific variable in a multivariate Coxph ?
Hello,
I would like to get the likelihood ratio and score tests for specific variables
in a multivariate coxph model. The default is Wald, so the tests for each
separate variable is based on Wald's test. I have the other tests for the full
model but I don't know how to get them for each variable.
Any idea?
David Biau.
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