Displaying 20 results from an estimated 400 matches similar to: "Diebold Mariano Test"
2007 Feb 09
2
RE gap statistic in cluster analysis
Has anyone implemented Tibrishani's gap statistic in R or S plus? If so I would greatly appreciate the relevant script file.
Any help will be much appreciated
Kind regards
Dr Graham Leask
Economics and Strategy Group
Aston Business School
Aston University
Aston Triangle
Birmingham
B4 7ET
Tel: Direct line 0121 204 3150
email g.leask@aston.ac.uk
[[alternative HTML version deleted]]
2006 Oct 21
1
Box M test
Dear List
I am looking for a script that will calculate the Box M test to test the homogeneity of the variance/covariance matrix between two matrices.
If anyone could send me the script I would appreciate it.
I am aware of the scepticism about this test, where due to extreme sensitivity a p value of 0.01 is recommended. Despite this however Box's M test is the established
2007 Feb 17
1
help with cluster stopping rules
Is there a function available in R that implements Mojena's Upper Tail Rule or that draws a Mojena plot?
I would also like to find a function that implements Duda and Hart's stopping rule.
Finally with function cophenet how can I achieve a straightforward Cophenet correlation coefficient (i.e. one number for example 0.876) that gives the agreement between the structure of the
2012 Apr 28
2
"Modified Diebold-Mariano Test" with forecast package
Hi
I tried to calculate modified Diebold-Mariano Test in R . I have already
find a "forecast" package to calculate the
Diebold-Mariano Test.
Please let me know how to obtain " Modified Diebold-Mariano Test" ?
Regards,
Serdar
--
View this message in context: http://r.789695.n4.nabble.com/Modified-Diebold-Mariano-Test-with-forecast-package-tp4594648p4594648.html
Sent from
2011 Feb 18
0
Is the Diebold Mariano Test in forecast package adjusted?
Hello
I would like to know if the Diebold Mariano Test in the forecast Package is adjusted to small samples (as Harvey, Leybourne, Newbold suggest) If not, how can I do that manually?
Paka
2013 Apr 06
2
Replace missing value within group with non-missing value
Dear List members
I have a large dataset organised in choice groups see sample below
+-------------------------------------------------------------------------------------------------+
| dn obs choice acid br date cdate situat~n mth year set |
2011 Nov 07
2
[LLVMdev] [cfe-dev] LLVM 3.0rc3 Testing Beginning
On Nov 7, 2011, at 2:00 PM, Bill Wendling wrote:
> Good day, LLVMers!
>
> We are starting on our third (and hopefully last) round of testing for LLVM 3.0. Please visit:
>
> http://llvm.org/pre-releases/3.0/rc3/
>
> for the sources. There are also binaries for Darwin up there, with more to come during the week. Please build this release candidate, test it out on your
2013 Apr 07
3
mlogit error
Dear List
I am trying to fit a multinomial model using the mlogit package. Attempting to load
the data into mlogit presents the following error.
MLOG<-mlogit.data(Mult3,shape="long",choice="CHOICE",alt.var="mode.ids",indivs = "set3",chid.var = "obs")
Error in `row.names<-.data.frame`(`*tmp*`, value = c("1.1", "1.2",
2011 Nov 08
0
[LLVMdev] [cfe-dev] LLVM 3.0rc3 Testing Beginning
Which files are needed to build clang? Is it clang-3.0rc2 and llvm-3.0rc3 or do I need the whole test suite?
John
Dr John P. Fletcher Tel: (44) 121 204 3389 (direct line), FAX: (44) 121 204 3678
Chemical Engineering and Applied Chemistry (CEAC),
Associate Dean - External Relations,
School of Engineering and Applied Science (EAS),
Aston University, Aston Triangle, BIRMINGHAM B4 7ETÂ
2005 Mar 02
3
Samba as PDC and BDC on the same network.
I have recently configured two servers to be controlers of my domain.
The first one is the PDC and is configured like :
domain master = yes
prefered master = yes
local master = yes
domain logons = yes
security = user
os level = 99
And the second, the BDC like :
domain master = no
prefered master = no
local master = no
domain logons = yes
security = user
2008 Mar 07
0
Time series panel
I have a set of data that consists of a number of biological measurements.
The columns are Time that runs from 01/01/2005 to 01/5/2007, Group which has 23 levels and postcode which is nested within group. This is a balanced panel but the number of postcodes differs within groups, from 15 to 400. The rest of this data consists of a number of columns of quantitative measures, largely counts.
2007 Mar 01
0
Reshape data
I have two data frames with a number of common variables that I wish to put into "long format".
The first contains the variables
es(Csales)
[1] "terr" "Dec.02" "Jan.03" "Feb.03" "Mar.03" "Apr.03" "May.03" "Jun.03"
[9] "Jul.03" "Aug.03" "Sep.03" "Oct.03"
2007 Feb 12
0
V fold cross validation
Does any package available in R contain the V-fold cross-validation method for determining the right number of clusters?
Any help greatly appreciated
Kind regards
Dr Graham Leask
Economics and Strategy Group
Aston Business School
Aston University
Aston Triangle
Birmingham
B4 7ET
Tel: Direct line 0121 204 3150
email g.leask@aston.ac.uk
[[alternative HTML version deleted]]
2012 Oct 23
10
How to pick colums from a ragged array?
I have a large dataset (~1 million rows) of three variables: ID (patient's name), DATE (of appointment) and DIAGNOSIS (given on that date).
Patients may have been assigned more than one diagnosis at any one appointment - leading to two rows, same ID and DATE but different DIAGNOSIS.
The diagnoses may change between appointments.
I want to subset the data in two ways:
- define groups
2012 Jun 22
3
removing NA from a data frame
Removing rows with NAs, using na.omit(), doesn't seem to be working for me.
Dataset:
> str ( ex10s )
'data.frame': 2189576 obs. of 5 variables:
$ LOPNR : int 58 58 58 58 64 64 64 64 64 64 ...
$ DIAGNOS: Factor w/ 173 levels "F20","F200","F2000",..: 128 128 128 128 105 105 105 160 105 105 ...
$ X_DATE : int 20060821 20061207 20080102 20090904
2003 May 23
1
Fw: write.table only writes the first 256 variables/columns
Thanks. I was "believing" an Excel import of the file - as you say, a
re-import
into R still has 333 columns. I shall look elsewhere for the cause of the
mysterious truncation.
Stuart
> ----- Original Message -----
> From: "Thomas Lumley" <tlumley at u.washington.edu>
> To: "Stuart Leask" <stuart.leask at nottingham.ac.uk>
> Cc:
2006 Apr 25
8
Permissions for share
opensuse 10/find / samba-3.0.20b-3.3
I'm trying to change directory permissions on a share so all users can modify files in the share and when I do as suggested in Ch15 of Samba Howto the following happens
$ find `directory_name' -type d -exec chown nobody:users {}\;
find: missing argument to `-exec'
Chris Boyd
Systems Engineer
USIT
19-21 Aston Quay
Dublin 2
Ireland
Tel: +353 1
2006 Apr 06
12
net drive mapping not working in login script
I've set the path for each user in pdbedit and created a login script with drive mapping etc etc
The network drives aren't being mapped when I login each user:
smb.conf
[global]
printcap name = cups
cups options = raw
map to guest = Bad User
# include = /etc/samba/dhcp.conf
logon path = \\%L\profiles\.msprofile
logon home = \\%L\%U\.9xprofile
2002 Jan 18
1
RE: z-scores for different factor levels
Hi Stuart,
I often use this small function
standardize <- function(x) ( x - mean(x, na.rm=T) ) / sqrt(var(x,
na.rm=T))
to standardize variables.
You should be able to use this to do what you want by splitting the data
frame into sections based on the factor level, using standardize() to create
a new variable in each section, then paste the data frame back together.
Something like:
#
2002 Jan 08
3
Finding functions in uninstalled libraries
(Many thanks to David Barron & Jonathan Baron for pointing me to 'recode' in
the 'car' package).
I think I've been told this before, but how do I search for a
function/keyword in libraries I don't yet have installed?
(ie. on the CRAN site I tried the search engines with "recode" etc., but
didn't pick up the car package this way)
Stuart
Dr Stuart Leask