Displaying 20 results from an estimated 882 matches for "deficiencies".
2009 Mar 13
1
lsfit w/ rank-deficient x
Dear R-devel,
It seems that lsfit incorrectly reports coefficients when the input matrix 'x' is rank-deficient, see the example below:
## here values of 'b' and 'c' are incorrectly swapped
> x <- cbind(a=rnorm(100), b=0, c=rnorm(100)); y <- rnorm(100); lsfit(x, y)$coef
Intercept a b c
-0.0227787 0.1042860 -0.1729261 0.0000000
Warning
2010 Oct 07
2
[LLVMdev] [Q] x86 peephole deficiency
Hi all,
I am slowly working on a SwitchInst optimizer (http://llvm.org/PR8125)
and now I am running into a deficiency of the x86
peephole optimizer (or jump-threader?). Here is what I get:
andl $3, %edi
je .LBB0_4
# BB#2: # %nz
# in Loop: Header=BB0_1
Depth=1
cmpl $2, %edi
2012 Jan 31
0
Error in linearHypothesis.mlm: The error SSP matrix is apparently of deficient rank
Hi,
I have encountered this error when attempting a One-way Repeated-measure ANOVA
with my data.
I have read the "Anova in car: SSPE apparently deficient rank" thread
by I'm not sure the within-subject interaction has more degrees of freedom
than subjects in my case.
I have prepared the following testing script:
rm(list = ls())
2008 Aug 13
1
summary.manova rank deficiency error + data
Dear R-users;
Previously I posted a question about the problem of rank deficiency in
summary.manova. As somebody suggested, I'm attaching a small part of
the data set.
#***************************************************
"test" <-
structure(.Data = list(structure(.Data = c(rep(1,3),rep(2,18),rep(3,10)),
levels = c("1", "2", "3"),
class =
2006 Jan 11
1
hypothesis testing for rank-deficient linear models
Take the following example:
a <- rnorm(100)
b <- trunc(3*runif(100))
g <- factor(trunc(4*runif(100)),labels=c('A','B','C','D'))
y <- rnorm(100) + a + (b+1) * (unclass(g)+2)
m <- lm(y~a+b*g)
summary(m)
Here b is discrete but not treated as a factor. I am interested in
computing the effect of b within groups defined by the
2004 Nov 02
2
Color schemes that work for people with color-deficient vision
A recent article in the earth science literature cited below and available at
http://geography.uoregon.edu/datagraphics/EOS/
points out that rainbow color schemes and mixtures of green and yellow
can be troublesome for people with color-deficient vision.
The authors propose alternative schemes that can be viewed and downloaded
in RGB, HSV, CMYK, and RGB256 formats from
2010 Oct 07
0
[LLVMdev] [Q] x86 peephole deficiency
On Oct 6, 2010, at 6:16 PM, Gabor Greif wrote:
> Hi all,
>
> I am slowly working on a SwitchInst optimizer (http://llvm.org/PR8125)
> and now I am running into a deficiency of the x86
> peephole optimizer (or jump-threader?). Here is what I get:
>
>
> andl $3, %edi
> je .LBB0_4
> # BB#2: # %nz
>
2007 Nov 03
0
rank-deficient model matrix
Dear:
I want to construct a gee model in R. When I ran the program, there was a warning in the output.
The warning is "Beginning Cgee S-function, @(#) geeformula.q 4.13 98/01/27
gee(cbind(hyper, nohyper) ~ I(Ethnic) + I(Gender) + I(drink) + :
rank-deficient model matrix"
What is the rank-deficient model matrix? What should I do to
2010 Jan 03
1
Anova in 'car': "SSPE apparently deficient rank"
I have design with two repeated-measures factor, and no grouping
factor. I can analyze the dataset successfully in other software,
including my legacy DOS version BMDP, and R's 'aov' function. I would
like to use 'Anova' in 'car' in order to obtain the sphericity tests
and the H-F corrected p-values. I do not believe the data are truly
deficient in rank. I
2005 Dec 13
0
0/1 vector for indexing leads to funny behaviour (PR#8389) (maybe a documentation deficiency?)
The other place its discussed is in 3.4.1 of the R Language Definition:
http://finzi.psych.upenn.edu/R/doc/manual/R-lang.html#Indexing-by-vectors
On 12/13/05, Tony Plate <tplate at acm.org> wrote:
> Yes, 0/1 (numeric) are intended to be used as index vectors -- and they
> have the semantics of numeric indices, which is that 0 elements in the
> index are omitted from the result.
2010 Oct 07
1
model.frame deficiency
The model.frame function has trouble with a certain type of really long
formula. Here is a test:
tname <- paste('var', 1:50, sep='')
tmat <- matrix(rnorm(500), ncol=50, dimnames=list(NULL, tname))
tdata <- data.frame(tmat)
temp1 <- paste( paste(tname, tname, sep='='), collapse=', ')
temp2 <- paste("~1 + cbind(", temp1, ")")
2006 Oct 31
0
6308380 e_ddi_majorinstance_to_path implementation deficient for /devices/pseudo paths
Author: cth
Repository: /hg/zfs-crypto/gate
Revision: 8c3216f8ae4cd2c699db490d2a79406f3c420d36
Log message:
6308380 e_ddi_majorinstance_to_path implementation deficient for /devices/pseudo paths
Files:
update: usr/src/uts/common/os/sunddi.c
2002 Apr 29
0
deficiencies in readline capability
When I first configured and built R, I did not have the GNU readline
library installed on my system, so naturally I got an R without
readline capabilities. I then installed the GNU readline library, and
again configured and built R. I now have an R with readline
capability, but it is a deficient readline capability, providing only
one-line editing capability (e.g., CTRL-A, CTRL-E, CTRL-B,
2007 Feb 18
0
Predict(); Warning rank deficient matrix
I am trying to use lm() for resression followed by
stepAIC function. Now when i try to use to predict for
some input, predict() gives a warning : prediction
from a Rank deficient matrix may be misleading.
As I am new to R (or to statistics) How alarming this
warning may be?
Regards,
____________________________________________________________________________________
The fish are biting.
2010 Feb 20
0
deficient rank question
Hi everyone. I am a new user of R so thanks for your help! I'm running a
regression and receive an error that states that the "residuals have rank 45
< 169." What does this mean?
Thanks!
--
View this message in context: http://n4.nabble.com/deficient-rank-question-tp1562644p1562644.html
Sent from the R help mailing list archive at Nabble.com.
2019 Jul 24
6
[RFC] A new multidimensional array indexing intrinsic
Hi all,
On Wed, 24 Jul 2019 at 16:14, Michael Kruse via llvm-dev
<llvm-dev at lists.llvm.org> wrote:
> Mmmh, looks like Tim Northover is actively working on typeless/opaque
> pointers, e.g. https://reviews.llvm.org/D64203
Yep, I'm spending as much time as I can on the project. I think
there's not really much chance that it'll be required in this cycle
(i.e. when we fork
2010 Oct 13
2
[LLVMdev] [Q] x86 peephole deficiency
Am 07.10.2010 um 19:50 schrieb Chris Lattner:
>
> On Oct 6, 2010, at 6:16 PM, Gabor Greif wrote:
>
>> Hi all,
>>
>> I am slowly working on a SwitchInst optimizer (http://llvm.org/
>> PR8125)
>> and now I am running into a deficiency of the x86
>> peephole optimizer (or jump-threader?). Here is what I get:
>>
>>
>> andl $3,
2013 Oct 05
2
bridged networking doesn't bring up eth0: RTNETLINK answers: File exists
...t static
address 173.228.81.234
broadcast 173.228.81.255
netmask 255.255.255.0
gateway 173.228.81.1
--
Brian Lavender
http://www.brie.com/brian/
"There are two ways of constructing a software design. One way is to
make it so simple that there are obviously no deficiencies. And the other
way is to make it so complicated that there are no obvious deficiencies."
Professor C. A. R. Hoare
The 1980 Turing award lecture
2003 Nov 22
3
summary.manova and rank deficiency
Hi all,
I have received the following error from summary.manova:
Error in summary.manova(manova.test, test = "Pillai") :
residuals have rank 36 < 64
The data is simulated data for 64 variables. The design is a 2*2 factorial with 10 replicates per treatment. Looking at the code for summary.manova, the error involves a problem with qr(). Does anyone have a suggestion as to how to
2010 Oct 13
0
[LLVMdev] [Q] x86 peephole deficiency
On Oct 13, 2010, at 11:22 AM, Gabor Greif wrote:
> Hi Chris,
>
> I had a look into MachineCSE, but it looks like MBB-oriented.
> The above problem is an inter-block one. Also MCSE seems
> to perform value numbering on virtual/physical registers, which
> does not map very well to status register bits that are implicitly
> defined.
> Any chance to recast this issue as a