similar to: Interesting behavior of lm() with small, problematic data sets

Displaying 20 results from an estimated 273 matches similar to: "Interesting behavior of lm() with small, problematic data sets"

2017 Sep 05
1
Interesting behavior of lm() with small, problematic data sets
Tim, I think what you're seeing is https://en.wikipedia.org/wiki/Loss_of_significance. Cheers, Mark From: "Glover, Tim" <Tim.Glover at amecfw.com> To: "r-help at r-project.org" <r-help at r-project.org> Date: 09/05/2017 11:37 AM Subject: [R] Interesting behavior of lm() with small, problematic data sets Sent by:
2007 Jul 11
2
Previously saved workspace restored
hi there, i an beginner of R. some one have sent me a file (extension is .Rdata). i have installed R in my computer and i just double clicked the data. then it automatically opened R programme and displayed that [previously saved workspace restored]. the following message was displayed. Type ''demo()'' for some demos, ''help()'' for on-line help,
2016 Apr 20
1
simulation in R
I realized that there was a typo error. I mean "Monte Carlo Simulation" ________________________________________ From: R-help <r-help-bounces at r-project.org> on behalf of Kristi Glover <kristi.glover at hotmail.com> Sent: April 19, 2016 11:48 PM To: R-help Subject: [R] simulation in R Hi R user, Would you mind to help me to find the range with stochastic events? For
2012 Sep 20
2
how can I give same name to column and row?
Hi R User, I calculated a correlation matrix and I was trying to give a same name for rows and columns (heading) in the correlation matrix. But, I was not able to do so. Would you mind let me know how I can assign the same name for the heading of row and columns in the matrix? I appreciate for your help. cheers, K [[alternative HTML version deleted]]
2016 Apr 20
1
simulation in R
Hi R user, Would you mind to help me to find the range with stochastic events? For example, daT<-structure(list(sn = 1:14, growthrate = c(0.5, 0.6, 0.7, 0.99, 0.1, 0.3, 0.4, 0.5, 0.5, 0.2, 0.1, 0.4, 0.3, 0.43)), .Names = c("sn", "growthrate"), class = "data.frame", row.names = c(NA, -14L)) I want to find the ranges of growth rate of the above data using Mote
2013 Jun 23
1
Which is the final model for a Boosted Regression Trees (GBM)?
Hi R User, I was trying to find a final model in the following example by using the Boosted regression trees (GBM). The program gives the fitted values but I wanted to calculate the fitted value by hand to understand in depth. Would you give moe some hints on what is the final model for this example? Thanks KG ------- The following script I used #----------------------- library(dismo)
2009 Apr 07
5
mongrel server core dump on Sun Solaris
I am running my Mongrel Web Server 1.1.5 on Sun Solaris 10 server with Apache 2.2 proxy running with single Mongrel instance to handle my RoR Web Applications request. My RoR web application was developped on Windows plateform, once I svn my RoR souce codes to Sun Solaris Web Application server and run the application through web browser. My Mongrel Web server most time may die and a core dump
2003 Apr 17
1
Odd error: Physical size does not match superblock size
Hello, I had something interesting happen on a RH8 ext3 system I setup.I am at a loss to understand what happened. Info: This system has two IDE disks, partitioned identically, and the largest partition on each (/dev/hda3 and /dev/hdb3, 96GB each) was mirrored in a linux software RAID-1 configuration. It was running fine for many months. Then I updated the kernel and needed to
2017 Jul 05
1
How can I make the legend in ggplot2 the same height as my plot?
Hi R Users, I tried to increase the legend height in ggplot2, but it did not respond at all using the follwoing code. Do you have any suggestions for me? dat<-data.frame(temperature) P1<-ggplot(dat, aes(X, Y)) Scenario1<-P1+geom_point(aes(colour = value), size = 1)+ theme_bw()+ theme(axis.text.x = element_blank(),axis.text.y = element_blank())
2017 Jul 30
1
Add Anova statistics in each figure
Hi R Users, I created interaction plots in ggplot2 and was trying to add output of two way ANOVA models, especially only interaction ( example treatment*control F(XX, XX) = xxx, p = xxx) into figures, but i was not able to add. Would you mind to help on how I can add information into each figure? I have attached the example data and the code that I used for this. dat<-structure(list(Sites
2006 Apr 27
2
problematic admin/views
ok, i have a pretty almost finished (frontend) blog, i have defined an admin zone with authentication to add content, now im getting trouble with the views for the controllers in the admin zone, here you can see my file structure: http://img284.imageshack.us/my.php?image=tmpviews6oq.gif and my admin controllers like this: controllers/admin/admin_controller.rb class
2003 Jul 17
2
ext3 and quota still problematic?
Hello, we used ext3 with diskquota and kernel 2.4.19 and 2.4.20 and went into the described problem here: http://www.zip.com.au/~akpm/linux/ext3/ext3-usage.html see Status Were there any merges with -ac in this direction in 2.4.21 so it might be fixed? Will there be merges in the future? Does kernel 2.6.x also have this problem? Thanks alot for your answers. -- Noèl
2012 Sep 13
0
problematic p values for Dixon Q test
I am using R dixon.test in order to perform Q test for detection of outliers. The p-values for high Q values are consistent with the table in Rorabacher, D.B. (1991) http://www.flworkshop.com/sscs/dixon_test.pdf, but it seems that small Q-values get problematic p-values. For example: dixon.test(c(0.324,0.5,1,1.324),two.sided=T) Q = 0.324, p-value = 1
2017 Sep 06
1
Interesting behavior of lm() with small, problematic data sets
> I think what you're seeing is > https://en.wikipedia.org/wiki/Loss_of_significance. Almost. All the results in the OP's summary are reflections of finite precision in the analytically exact solution, leading to residuals smaller than the double precision limit. The summary is correctly warning that it's all potentially nonsense, and indeed the only things you
2012 Jul 10
1
Bug#603391: Do you have a copy of the problematic grub configuration file?
tags 603391 +moreinfo thanks Hello, It's been quite a while so I suspect the answer will be no but do you happen to have a copy of the problematic grub configuration file? Thanks, Ian.
2012 Jul 10
1
Bug#643953: Copy of the problematic grub config file?
Hi Phil, Do you by any chance have a copy of the problematic configuration file? Thanks, Ian.
2017 Sep 06
1
Interesting behavior of lm() with small, problematic data sets
Indeed (version-specific). With R 3.4.1 on linux, I get coefficients and residuals that are numerically exact, F-statistic = NaN, p-value = NA, R-squared = NaN, etc. All of which is what ought to happen, given that the response variable (y) is not actually variable. ---JRG John R. Gleason On 09/06/2017 09:10 AM, S Ellison wrote: >> I think what you're seeing is >>
2006 Oct 09
2
Bug#391935: Xen trademark might be problematic
Package: xen-hypervisor-3.0-unstable-1-amd64 Version: 3.0-unstable+hg11561-1 Severity: serious It seems Xen has a similar trademark policy as the much discussed Mozilla one. Specifically http://www.xensource.com/xen-tm-faq.html says: | 16. If I distribute a changed version of the Xen? hypervisor, may I | say that the changed product is the Xen hypervisor? | | No. If you have
2005 Sep 20
4
Proper way to boot memtest86
Hello list, any try the new memtest86 v3.2 with isolinux 3.11 cd and pxeboot? How is the proper way to chainload memtest86 I was tried: label memtest kernel memtest.bin but, nothing happens just a weird hang (my older versions of memtest hangs too). Anyway chainloading in a floppy image with memdisk on CD or pxeboot was fine but if I use memory to emulate a floppy I was not using this memory
2006 Mar 18
9
Using <%= text_field %> within partials is problematic
All, Thanks for any help in advance. I have what I think is a very straightforward partial template and I can''t figure out why a text_field call within it doesn''t work. Here is my calling template: lists.rhtml <div id="target_lists"> <%= render(:partial => "target_lists", :collection => @target_lists) %> </div> In the