Displaying 20 results from an estimated 1000 matches similar to: "Finding Confidence Intervals"
2011 Mar 18
1
Problem with Slope.test function
Hi all,
I need to test the significnce of difference between slopes of two regression lines and regression line with theoretical line. I try to use Slope.test function from emu package,
but an error occured...
library(emu)
d1<-data.frame(P1=c(1,2,3,5,7,8,9,13,14,15),
P2=c(1,2,5,8,11,13,15,15,18,24),
R=c(2,7,8,9,16,21,27,31,33,36)) # First data set
m1<-lm(R~P1+P2+P1*P2,data=d1) # Regr.
2008 Jun 12
1
About Mcneil Hanley test for a portion of AUC!
Dear all
I am trying to compare the performances of several methods using the AUC0.1
and
not the whole AUC. (meaning I wanted to compare to AUC's whose x axis only
goes to
0.1 not 1)
I came to know about the Mcneil Hanley test from Bernardo Rangel Tura
and I referred to the original paper for the calculation of "r" which is an
argument of the function
cROC. I can only find the
2006 Mar 15
1
How to compare areas under ROC curves calculated with ROCR package
Dear all,
I try to compare the performances of several parameters to diagnose
lameness in dogs.
I have several ROC curves from the same dataset.
I plotted the ROC curves and calculated AUC with the ROCR package.
I would like to compare the AUC.
I used the following program I found on R-help archives :
From: Bernardo Rangel Tura
Date: Thu 16 Dec 2004 - 07:30:37 EST
2006 Mar 20
1
How to compare areas under ROC curves calculated with ROC R package
I might be missing something but I thought that AUC was a measure for
comparing ROC curves, so there is nothing else needed to "compare" them. The
larger AUC is the higher correlation of 2 variables compared. No other
measures or calculations are needed.
Jarek Tuszynski
-----Original Message-----
From: r-help-bounces at stat.math.ethz.ch
[mailto:r-help-bounces at stat.math.ethz.ch] On
2009 Oct 28
1
need help explain the routine input parameters for seROC and cROC found in the R archive
Please help.
I found the code in the archive.
The author of this script says: "The first function (seROC) calculate
the standard error of ROC curve, the second function (cROC) compare
ROC curves."
Can some one explain to me what are the na, nn and r parameters which
are used as the input to the following two functions?
Thanks much in advance.
> From: Bernardo Rangel Tura
>
2024 Jan 18
0
Is there any design based two proportions z test?
Dear Md Kamruzzaman,
I've copied this response to the r-help list, where you originally asked
your question. That way, other people can follow the conversation, if
they're interested and there will be a record of the solution. Please
keep r-help in the loop
See below:
On 2024-01-17 9:47 p.m., Md. Kamruzzaman wrote:
>
> Caution: External email.
>
>
> Dear John
>
2009 Jul 29
2
cannot allocate a vector with 1920165909 length
Dear Rusers,
The error for the following was that it cannot allocate the vector of
length 1920165909.
a <- expand.grid(se1=0:100/100, sp1=0:100/100, se2=0:100/100, sp2=0:100/100,
DR=0:100/100)
How to solve it? Maybe setwd(dir) can, i am not very sure about it.
Any ideas about it?
[[alternative HTML version deleted]]
2015 Sep 30
2
InstCombine wrongful (?) optimization on BinOp with SameOperands
Hi all,
I have been looking at the way LLVM optimizes code before
forwarding it to the backend I develop for my company and while building
define i32 @test_extract_subreg_func(i32 %x, i32 %y) #0 {
entry:
%conv = zext i32 %x to i64
%conv1 = zext i32 %y to i64
%mul = mul nuw i64 %conv1, %conv
%shr = lshr i64 %mul, 32
%xor = xor i64 %shr, %mul
%conv2 = trunc i64 %xor to i32
2006 Jan 30
3
Howto change @article.article.headline to @article.headline ?
I have to actions:
def index
@articles = Article.find(:all,
:conditions => "un_published != ''1''",
:order => "created_on desc")
end
and
def group
id = params[:id]
@articles = ArticleGroup.find(:all,
:include => [:group, :article],
:conditions => ["articles.un_published !=
2016 May 31
3
Signed Division and InstCombine
I was looking through the InstCombine pass, and I was wondering why signed
division is not considered a valid operation to combine in the
canEvaluateTruncated function. This means, given the following code:
%conv = sext i16 %0 to i32
%conv1 = sext i16 %1 to i32
%div = sdiv i32 %conv, %conv1
%conv2 = trunc i32 %div to i16
* Assume %0 and %1 are registers created from simple 16-bit loads.
We
2012 Jun 27
2
[LLVMdev] 8-bit DIV IR irregularities
Hi,
I noticed that when dividing with signed 8-bit values the IR uses a 32-bit signed divide, however, when unsigned 8-bit values are used the IR uses an 8-bit unsigned divide. Why not use a 8-bit signed divide when using 8-bit signed values?
Here is the C code and IR:
char idiv8(char a, char b)
{
char c = a / b;
return c;
}
define signext i8 @idiv8(i8 signext %a, i8 signext %b) nounwind
2006 Aug 31
0
Moving Window regressions with corrections for Heteroscedasticity and Autocorrelations(HAC)
# Using Moving/Rolling Windows, here we do an OLS Regression with corrections for #Heteroscedasticity and Autocorrelations (HAC) using Newey West Method. This code is a #extension of Ajay Shah?s code for moving windows simple OLS regression.
# The easiest way to adjust for Autocorrelations and Heteroscedasticity in the OLS residuals is to #use the coeftest function that is included in the
2006 Jul 26
4
can you pass data when you render :action
how can i do:
render :action => "headline", :id => @user.id
Thanks,
Ben Lisbakken
--
Posted via http://www.ruby-forum.com/.
2012 Dec 17
0
[LLVMdev] [PATCH] Teaching ScalarEvolution to handle IV=add(zext(trunc(IV)), Step)
On Mon, Dec 10, 2012 at 2:13 PM, Matthew Curtis <mcurtis at codeaurora.org> wrote:
> Hello all,
>
> I wanted to get some feedback on this patch for ScalarEvolution.
>
> It addresses a performance problem I am seeing for simple benchmark.
>
> Starting with this C code:
>
> 01: signed char foo(void)
> 02: {
> 03: const int count = 8000;
> 04: signed char
2012 Dec 10
3
[LLVMdev] [PATCH] Teaching ScalarEvolution to handle IV=add(zext(trunc(IV)), Step)
Hello all,
I wanted to get some feedback on this patch for ScalarEvolution.
It addresses a performance problem I am seeing for simple benchmark.
Starting with this C code:
01: signed char foo(void)
02: {
03: const int count = 8000;
04: signed char result = 0;
05: int j;
06:
07: for (j = 0; j < count; ++j) {
08: result += (result_t)(3);
09: }
10:
11: return result;
12: }
I
2018 Aug 06
2
Lowering ISD::TRUNCATE
I'm working on defining the instructions and implementing the lowering
code for a Z80 backend. For now, the backend supports only the native
CPU-supported datatypes, which are 8 and 16 bits wide (i.e. no 32 bit
long, float, ... yet).
So far, a lot of the simple stuff like immediate loads and return values
is very straightforward, but now I got stuck with ISD::TRUNCATE, as in:
2006 Jun 27
6
Custom action on Active Record Validation Failure?
Instead of having it highlight the bad fields when you enter in a record
that fails validation, is there a way to make it do an action? I''m
looking for something like this:
validates_uniqueness_of :user_id,:url => {:controller => "headline",
:action => "index"}
so that on failing the uniqueness check, it would go to the headline
controller.
--
2016 Aug 04
2
Remove zext-unfolding from InstCombine
Hi Sanjay,
> Am 02.08.2016 um 21:39 schrieb Sanjay Patel <spatel at rotateright.com>:
>
> Hi Matthias -
>
> Sorry for the delayed reply. I think you're on the right path with D22864.
No problem, thank you for your answer!
> If I'm understanding it correctly, my foo() example and zext_or_icmp_icmp() will be equivalent after your patch is added to InstCombine.
2011 Aug 26
1
methods() not listing some S3 plot methods...?
Dear List,
This may be related to this email thread initiated by Ben Bolker last
month: https://stat.ethz.ch/pipermail/r-devel/2011-July/061630.html
In answering this Question on StackOverflow
http://stackoverflow.com/q/7195628/429846 I noticed that `methods()` was
not listing some S3 methods for `plot()` provided by the mgcv package.
At the time I wanted to check the development version of R as
2008 Sep 23
3
Finding distinct months using find_by_sql
Hello,
I''m wondering if someone might be able to offer me a solution to the
following problem that has so far stumped me.
I''m trying to get the distinct months (and years) from a date field to
display as a list in a view. For example, there might be a number of
records stored with dates in the table ''headlines'':
name date
record1 21-09-2008
record2