Displaying 20 results from an estimated 200 matches similar to: "[kjbeath@kagi.com: Remedial stats]"
2019 Apr 30
0
patch to improve matrix conformability error message
I think this is a good idea. Is there a reason why it got no interest?
Slippery slope?
Or maybe others were also just occupied trying to figure out how
Joshua's second message had timestamp earlier than his first message?
On Fri, Apr 05, 2019 at 12:05:36PM -0400, Joshua N Pritikin wrote:
>With this patch,
>
>> A <- matrix(1, 2, 2)
>> B <- matrix(2, 3, 2)
>> A
2019 Apr 05
2
patch to improve matrix conformability error message
With this patch,
> A <- matrix(1, 2, 2)
> B <- matrix(2, 3, 2)
> A %*% B
Error in A %*% B :
non-conformable arguments of dimension (2, 2) and (3, 2)
>From 205b591d4d14b5ff667325fb233a6deb08314726 Mon Sep 17 00:00:00 2001
From: Joshua Nathaniel Pritikin <jpritikin at pobox.com>
Date: Fri, 5 Apr 2019 12:03:58 -0400
Subject: [PATCH] Improve non-conformable arguments error
2018 May 31
0
mysterious rounding digits output
Hi Joshua,
Because there are no values in column ddd less than 1.
itemInfo[3,"ddd"]<-0.3645372
itemInfo
aaa bbb ccc ddd eee
skill 1.396 6.225 0.517 5.775 2.497
predict 1.326 5.230 0.462 5.116 -2.673
waiting 1.117 4.948 NA 0.365 NA
complex 1.237 4.170 0.220 4.713 5.642
novelty 1.054 4.005 0.442 4.260 2.076
creative 1.031 3.561 0.362 3.689
2018 May 31
0
mysterious rounding digits output
>>>>> Ted Harding
>>>>> on Thu, 31 May 2018 07:10:32 +0100 writes:
> Well pointed out, Jim!
> It is infortunate that the documentation for options(digits=...)
> does not mention that these are *significant digits*
> and not *decimal places* (which is what Joshua seems to want):
Since R 3.4.0 the help on ?options *does* say
2018 May 31
2
mysterious rounding digits output
Well pointed out, Jim!
It is infortunate that the documentation for options(digits=...)
does not mention that these are *significant digits* and not
*decimal places* (which is what Joshua seems to want):
"?digits?: controls the number of digits to print when
printing numeric values."
On the face of it, printing the value "0,517" of 'ccc' looks
like printing 4
2013 Jun 06
1
dmvnorm
Summary:
+ I am writing an R extension that needs to call dmvnorm more than
10,000 times during a model fitting computation.
+ My extension uses openmp for parallel execution.
+ As of R 3.0, it is no longer permitted for threads to call the R
interpreter because there is a stack overflow check that always trips
because the thread's stack is different from what R is expecting.
+
2018 May 31
3
mysterious rounding digits output
R version 3.5.0 (2018-04-23) -- "Joy in Playing"
Platform: x86_64-pc-linux-gnu (64-bit)
options(digits=3)
itemInfo <- structure(list("aaa" = c(1.39633732316667, 1.32598263816667, 1.11658324066667, 1.23651072616667, 1.05368679983333, 1.03100737383333, 0.9630728395, 0.7483865045, 0.620086646166667, 0.5411017985, 0.496397607833333, 0.459528044666667, 0.427877047833333,
2005 Sep 12
5
remedial stats education
In short:
I didn't take enough stats courses in college. Now I am working on scientific
research and I feel somewhat lost when it comes to designing the statistical
framework. I have looked through the books at:
http://www.r-project.org/doc/bib/R-books.html
I even tried to read [17] Julian J. Faraway. Linear Models with R. This book
is too advanced. It helped a little bit but I still
2012 Aug 27
2
randomLCA
Can anybody, please, explain me how many parameter are estimated using
randomLCA?
For examples, model "dentistry.lca2random" estimate 1 scale (or
variance, b_j) parameter and 2 position parameters (a_cj)? Doesn't
it?
Do I need at least 4 diagnostic tests for such a model?
What happens if I specify options blocksize and byclass? How many
diagnostic tests (or rater) I need?
2019 Apr 30
1
patch to improve matrix conformability error message
On Mon, Apr 29, 2019 at 06:28:46PM -0700, frederik at ofb.net wrote:
> I think this is a good idea. Is there a reason why it got no interest?
> Slippery slope?
What's the next step? Can it get committed?
> Or maybe others were also just occupied trying to figure out how
> Joshua's second message had timestamp earlier than his first message?
As a new subscriber, I guess my
2005 Jan 13
2
GAM: Remedial measures
I fitted a GAM model with Poisson distribution to a data with about 200
observations. I noticed that the plot of the residuals versus fitted values
show a trend. Residuals tend to be lower for higher fitted values. Because,
I'm dealing with count data, I'm thinking that this might be due to
overdispersion. Is there a way to account for overdispersion in any of the
packages MGCV or GAM?
2005 Sep 22
1
Rf_initEmbeddedR in Windows
Hi All
My C++/linux program uses Rf_initEmbeddedR to start R and then calls some
R functions. Now I try to port it to Windows. Give the fact that
Rf_initEmbeddedR is missing in Windows, I try to use the implmentation in
Rserve by Simon Urbanek. When I build in MS Visual Studio, I get the
following linking error
error LNK2019: unresolved external symbol __imp__putenv referenced in
function
2002 Dec 21
0
[Announce]Libgcrypt 1.1.11 released
Hi!
I am pleased to announce the availability of libgcrypt version 1.1.11.
Libgcrypt is a general purpose cryptographic library based on the code
from GnuPG and licensed under the GNU Lesser General Public License.
It provides functions for all cryptograhic building blocks: symmetric
ciphers (AES,DES,Blowfish,CAST5,Twofish,Arcfour), hash algorithms
(MD4, MD5, RIPE-MD160, SHA-1, TIGER-192), MACs
2007 Aug 20
1
rv package, rvnorm function
In an attempt to learn to use the rv package, I have been working
through the examples in Jouni Kerman and Andrew Gelman's "Using Random
Variables to Manipulate and Summarize Simulations in R" (July 4, 2007).
I am using a Dell Precision 380n computer running Gentoo Linux and R
2.2.1 (the latest available through Gentoo's portage/emerge system).
Everything worked well until I
2005 Apr 22
2
pointer to comments re Paul Murrell's new book, R, & SAS on Andrew Gelman's blog
There are some interesting comments re Paul Murrell's new book, R, & SAS
on Andrew Gelman's blog:
http://www.stat.columbia.edu/~cook/movabletype/archives/2005/04/a_new_book_on_r.html
-- Tony Plate
2005 May 17
3
The error in R while using bugs.R function
Dear R users,
I followed the instuctions on Dr. Gelman's web to install all
of documents that bugs.R needs, but when I try to run the school example that the web posted in R, I got an error: couldn't find function "bugs", what's wrong?
Thanks,
Jia
2006 Mar 30
3
Fundraising for FreeBSD security development
Dear FreeBSD users,
Slightly more than three years ago, I released FreeBSD Update, my first
major contribution to FreeBSD. Since then, I have become a FreeBSD
committer, joined the FreeBSD Security Team, released Portsnap, and
become the FreeBSD Security Officer. However, as I have gone from
being a graduate student at Oxford University -- busy writing my thesis
-- to a researcher at Simon
2010 May 28
3
Gelman 2006 half-Cauchy distribution
Hi,
I am trying to recreate the right graph on page 524 of Gelman's 2006
paper "Prior distributions for variance parameters in hierarchical
models" in Bayesian Analysis, 3, 515-533. I am only interested, however,
in recreating the portion of the graph for the overlain prior density
for the half-Cauchy with scale 25 and not the posterior distribution.
However, when I try:
2008 Jan 31
1
R2WinBUGS is broken
Dear R-users,
I am trying to use the following code to reproduce results from Prof.
Gelman's book, but have the listed error for R2WinBUGS version (the openbugs
version is good). I am using R-2.6.1 on windows XP, and all the R packages
are most current ones. schools.bug can be found at
http://www.stat.columbia.edu/~gelman/bugsR/runningbugs.html . Can anyone
help me to figure out what's
2005 May 16
1
A question about bugs.R: functions for running WinBUGs from R
Dear R users,
I've found bugs.R : the functions for running WinBUGs from R that is
writen by Dr. Andrew Gelman who is a professor from Columbia University.
The bugs.R would be very useful for me, and I think many of you know it
as well. I followed the instuctions on Dr. Gelman's web to install all
of documents that bugs.R needs, but when I try to run the school example
the web posted in