Displaying 20 results from an estimated 1652 matches for "leverages".
2009 Apr 06
6
Need help in calculating studentized residuals/leverage values of non-linear model [nls()]
Hi there,
I hope I can get advice regarding the calculation of leverage values or
studentized residual values of a non-linear regression model. It seems like
rstudent() does not work on a nls object.
Many thanks in advance!
Best regards,
Xingli
2005 Apr 23
3
Enhanced version of plot.lm()
...dj.x=FALSE)
}
if (show[5]) {
ylim <- range(rs, na.rm = TRUE)
hatval <- hatvalues(x)
if (id.n > 0) {
ylim <- ylim + c(-1, 1) * 0.08 * diff(ylim)
show.r <- order(-cook)[iid]
}
plot(hatval, rs, ylim = ylim, main = main,
xlab = "Leverages", ylab = ylab23,
type="n", ...)
panel(hatval, rs, ...)
if (one.fig)
title(sub = sub.caption, ...)
p <- length(coef(x))
for(crit in cook.levels){
curve(sqrt(crit*p*(1-x)/x), lty=2, add=T)
curve(-sqrt(crit*p*(1-x)/x), lty=2, add=T)...
2003 Aug 06
2
leverage
Hi
Can anyone help with the technique of obtaining leverages from a
conditional logistic regression model? The code lm.influence does not seem
to work for this data.
Thanks
Jane Murray
2012 Jan 02
4
Which AR Interfaces Leverage PreparedStatements/Binds?
I could not find the answer to this in a few Google searches and thought I would ask.
So when are prepared statements best leveraged in ActiveRecord''s interface? I never really noticed before, but simple condition hashes or scopes do not pass down the binds so that prepared statements are leveraged. So a `Car.find(1)` would but things like `Car.where(:id => 1).first` do not. Is it a
2009 Mar 03
1
detect outliers and high levarage points
Hi friends,
How to detect outliers and high leverage points for GLM ?
Could I use plot(model)
(i) "Residuals vs Fitted" graph to detect the outliers ?
(ii) "Residuals vs Leverage" graph to detect the high leverage points ?
And then remove those points from the data and re-run the model ?
[[alternative HTML version deleted]]
2010 Jan 19
4
[LLVMdev] Can I port LLVM as a source-to-source compiler?
Hello,
I am working in a project on a parallel programming language. I want to base
our language on Java or C/C++. But Java is preferred.
Many similar projects adopts a source-to-source methodology, e.g., Berkeley
UPC(using Open64), Titanium, and Rice University's Co-array Fortran. They
output C code with calls to the runtime. I think there are at least three
reasons: 1) using C as the
2006 Jul 25
3
dynamic languages - how to leverage/make best use?
Hi,
Does anyone have any links to, or info on, how best to leverage the
power of a dynamic language. That is coming across from Java to Ruby
I''m now pondering what would be the typical scenarios where I could
actually call upon the power of a dynamic language. This info could be
in the form of best practice for dynamic language usage, or dynamic
language patters perhaps.
2003 Jan 24
3
Multinomial Logit Models
Hi
I am wanting to fit some multinomial logit models (multinom command in
package nnet)
Is it possible to do any model checking techniques on these models
e.g. residual, leverage etc. I cannot seem to find any commands that
will allow me to do this.
Many thanks
----------------------
L.E.Gross
L.E.Gross at maths.hull.ac.uk
2009 May 04
0
[LLVMdev] leveraging back-end C compiler features in the gcc-based front-end
On Sun, May 3, 2009 at 6:19 PM, Bob Frankel <bios.bob.frankel at gmail.com> wrote:
> i'm looking into using llvm with TI's MSP430
Ah, you're in luck then: an MSP430 backend was checked in to SVN today
:) I don't think it's mature enough for general use yet, though.
> is there a way to leverage these (non-gcc) intrinsics in the llvm gcc-based
> frontend --
2011 Jul 06
0
Leverage values in VGLM
Hi,
I just want to know how to get leverage values in VGLM(Adjacent category
logit model, *acat()*) model
[[alternative HTML version deleted]]
2008 Dec 10
0
Calculating Leverage or studentized residuals with gls
Dear colleagues, hi.
I am using the function gls in R-package nlme and I want to compute either the leverage values or the studentized residuals. Can any body tell me how can do that?
With regards
___________________________________________________________
围蟻畏蟽喂渭慰蟺慰喂蔚委蟍[elided Yahoo spam]]
螔伪蟻蔚胃萎魏伪蟿蔚 蟿伪 蔚谓慰蠂位畏蟿喂魏维 渭畏
未喂伪胃苇蟿蔚喂 蟿畏谓 魏伪位蠉蟿蔚蟻畏 未蠀谓伪蟿萎 蟺蟻慰蟽蟿伪蟽委伪 魏伪蟿维 蟿蠅谓 蔚谓慰蠂位畏蟿喂魏蠋谓
渭畏谓蠀渭维蟿蠅谓
2009 May 04
3
[LLVMdev] leveraging back-end C compiler features in the gcc-based front-end
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
</head>
<body bgcolor="#ffffff" text="#000000">
<font size="-1"><font face="Verdana">i'm looking into using llvm with
TI's MSP430, for which a C compiler from TI already exists; the idea
here is to use llc -march=c and
2012 Feb 15
2
Control number of assets in resulting portfolio with optimizations using package fPortfolio
Dear All,
I am using package fPortfolio to run minimum variance portfolio
optimizations in R. I already know how to set portfolioSpecs, portfolio
objects and constraints. Unfortunately I am not able to set the following
type of constraints.
I have a timeSeries object with returns data for roughly 1.5k assets for 261
subperiods (workingdays) and want to compute the global minimum variance
2011 Sep 13
0
[LLVMdev] Strategy for leveraging llvm optimizations in vm
On 9/13/11 9:22 AM, Michael Clagett wrote:
> Oooohhh! That's interesting. Does the optimizer just work around
> these inline fragments? Is there documentation for this facility?
CC'ing the mailing list.
The inline assembly feature is described in the LLVM Language Reference
Manual (http://llvm.org/docs/LangRef.html). I'm not really familiar
with what the LLVM optimizers
2016 Oct 20
2
Leveraging newer CMake features for Language standards
LLVM currently has CMake code to try to detect the various options needed
to compile with C++11 support that has been around since prior to the CMake
version bump. One of the nicer features that came with the newer required
CMake version is that very thing. Rather than try to discern this yourself
CMake has the CXX_STANDARD and CXX_STANDARD_REQUIRED target properties. If
set appropriately on a
2005 Sep 13
4
plot(<lm>): new behavior in R-2.2.0 alpha
...ave been quite a few more proposals in the past. R <= 2.1.x
has been plotting the Cook's distances vs. observation number, whereas
quite a few people in the past have noted that all influence
measures being more or less complicated functions of residuals
and "hat values" aka "leverages", (R_i, h_{ii}), it would really
make sense and fit more to the other plots
to plot residuals vs. Leverages --- with the additional idea of
adding *contours* of (equal) Cook's distances to that plot, in
case one would really want to seem them.
In the mean time, this has been *active* in R...
2007 Apr 16
2
indexing a subset dataframe
Hello
I am having problems indexing a subset dataframe, which was created
as:
> waspsNoGV<-subset(wasps,site!="GV")
Fitting a linear model revealed some data points which had high
leverage, so I attempted to redo the regression without these data
points:
>wasps.lm<-lm(r~Nt,data=waspsNoGV[-c(61,69,142),])
which resulted in a "subscript out of bounds" error.
I'm
2015 Jun 08
3
[LLVMdev] Publication -- LLVM-Obfuscator - Software Protection for the Masses
Dear LLVM developers,
Here is a quick message announcing yet another academic publication leveraging on LLVM:
@INPROCEEDINGS{ieeespro2015-JunodRWM,
author={Pascal Junod and Julien Rinaldini and Johan Wehrli and Julie Michielin},
booktitle={Proceedings of the {IEEE/ACM} 1st International Workshop on Software Protection, {SPRO'15}, Firenze, Italy, May 19th, 2015},
editor = {Brecht
2009 May 04
2
[LLVMdev] leveraging back-end C compiler features in the gcc-based front-end
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta content="text/html;charset=ISO-8859-1" http-equiv="Content-Type">
</head>
<body bgcolor="#ffffff" text="#000000">
<font size="-1"><font face="Verdana">wow!!! i would be interested in
trying
2020 Oct 29
8
[RFC] FileCheck: (dis)allowing unused prefixes
Hello all,
TL;DR; if you used FileCheck --check-prefixes and you missed (misspelled,
for instance) one of the prefixes in your test, FileCheck silently ignores
that and the test passes.
1579 tests have this property.
*The details*
*=========*
Please refer to https://reviews.llvm.org/D90281 and the discussion there
for more details (make sure you open "older changes" for full context)