search for: problematic

Displaying 20 results from an estimated 907 matches for "problematic".

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 dixon.test(c(0.324,0.5,1,1.324),two.sided=F) Q = 0.324, p-value = 0.5 The p value I expect by simulation is ~0.83: norm=matrix(nrow=1000,ncol=4) for (i in 1:1000){ norm[i,]<-rnorm(4) q[i]<...
2010 Jan 19
3
read.table with special chars
Hi all, I am just starting with R and I have come across a problem which I guess it is easy to solve. I am reading a table with read.table function. This table contains chars which seem to be problematic when reading them such as "''" and "#", if I remove these characters fromt the table by hand the problem disappears. Otherwise, the whole table is not read, since reading stops at the problematic tuple. I have been looking in the ?read.table manual but have not found any...
2008 Nov 22
4
"syntax error, unexpected tIDENTIFIER , expecting kEND" in RJS response
...at means, the prior example works if "page.alert("hi")" is deleted. The strange thing about it is, that in another controller action I use a similar rjs template (containing two javascript calls as above) and it works. The only difference between both rjs templates is that the problematic one (the above example) renders a template which itself calls another template within a loop over a collection (job.requisites each do |r| render :partial => "requisite"). Anyone knows what is going on here and how to make this problematic example work? Thanks for any help! Jochen -...
2017 Sep 05
1
Interesting behavior of lm() with small, problematic data sets
...edia.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: "R-help" <r-help-bounces at r-project.org> I've recently come across the following results reported from the lm() function when applied to a particular type of admittedly difficult data. When working with small data sets (for instance 3 points) wi...
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
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
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 >>
2003 Jul 17
4
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
2004 Oct 01
13
Server not responding after Samba upgrade
Hi all, I used to run Samba 2.2.9 on Debian Woody. Yesterday I upgraded it (with all necessary packages) to 3.0.7. Since then, Samba on that server do not respond to netbios queries, only to direct access via IP. Also, when I try to resolv its name using nmblookup, I cannot find it. When I access to server via IP address everything works fine. Any idea ? TIA -- Eng. Dusan Djordjevic
2013 Jul 19
32
Is my Intel HD Graphics 4600 Xen VGA Passthrough to Windows 8 Enterprise HVM domU Considered Successful?
Hi, My Windows 8 Enterprise HVM domU configuration is as follows. I have to *disable* gfx_passthru, that is, gfx_passthru=0. Please take note. # XL domain configuration file for Windows 8 64-bit English HVM domU # Please refer to "man xl.cfg" for further explanations. # See also docs/misc/xl-network-configuration.markdown and # docs/misc/xl-disk-configuration.txt #
2013 Jul 19
32
Is my Intel HD Graphics 4600 Xen VGA Passthrough to Windows 8 Enterprise HVM domU Considered Successful?
Hi, My Windows 8 Enterprise HVM domU configuration is as follows. I have to *disable* gfx_passthru, that is, gfx_passthru=0. Please take note. # XL domain configuration file for Windows 8 64-bit English HVM domU # Please refer to "man xl.cfg" for further explanations. # See also docs/misc/xl-network-configuration.markdown and # docs/misc/xl-disk-configuration.txt #
2007 Sep 14
5
MS SQL server
...on. Is there an obvious certain-to-succeed approach? perl DBI + ODBC spings to mind, have not tried it yet - cannot access the systems yet - need to make a good plan. Am a bit concerned cos I dont know of an alternative to perl DBI + ODBC and I have heard a few anecdotes about how ODBC possibly problematic.. Any suggestions gratefully received and would be pleased to read the nice manual (if one is identified!). Tony
2011 Apr 03
9
proper keymap format ?
I just tried kbdmap.c32, got a format error Keyboard map file format error boot: the file I attempted to use was from sudo dumpkeys > keymap, and copied into /var/lib/tftpboot I''ll happily add whatever knowledge I get to the wiki-page for kbdmap FWIW, I tried this cuz my cursor keys were not working with menu.c32, so any hints to solve this problem would be great this
2007 Jun 18
4
Problem with binding data-frames
...an only be found in day 2. Is this somehow possible? I have several of these six-datasets groups, and only few of them are having this problem described above, and I cannot know in advance which. With most of the groups writing rbind(data1,data2,data3,data4,data5,data6) works easily, but these few problematic groups need also to be combined... Any help greatly appreciated! -Jouni
2007 Sep 30
3
Problems with Forms
Hi, I am using mechanize for a while now. Works great. But at the moment I have a small problem using it. The problematic file is attached. In that PHP-File you will see a formular, but mechanize doesn''t recognize it. Could somebody check this? Thanks, Bodo -- http://www.tvbrowser.org http://www.wannawork.de -------------- next part -------------- An HTML attachment was scrubbed... URL: ht...
2012 Jul 22
4
Facter fact length?
...a leading question, but is there a limitation as far as length/size of facts on a node? I have a need to perform one way sync of user accounts (non-Puppet managed users) on many pairs of servers. Thus far, it''s been done with scripts from primary -> backup server, and has been problematic. I''d like to create a fact that returns user:password_hash pairs, and then ensure those users are present on the backup server. I would guess the largest number of users on a node would be ~100. Any other creative solutions are appreciated, but keep in mind ldap/nis aren''t...
2012 Nov 29
4
[PATCH] x86/hap: fix race condition between ENABLE_LOGDIRTY and track_dirty_vram hypercall
There is a race condition between XEN_DOMCTL_SHADOW_OP_ENABLE_LOGDIRTY and HVMOP_track_dirty_vram hypercall. Although HVMOP_track_dirty_vram is called many times from qemu-dm which is connected via VNC, XEN_DOMCTL_SHADOW_OP_ENABLE_LOGDIRTY is called only once from a migration process (e.g. xc_save, libxl-save-helper). So the race seldom happens, but the following cases are possible.
2018 Jan 08
1
Why is remalloc not marked as noalias?
...at we can safely mark realloc as noalias? Realloc is tricky in practice and has caused us to rethink pointer equality on CHERI. We’ve observed that this is a fairly common idiom: char *new = realloc(old, someLength); if (new != old) { // Update some copies of old to use new } This was problematic for us, because old and new had the same address but different bounds information and we were treating comparisons of pointers as equal if they pointed to the same location. This is problematic with noalias, because if the result of realloc is guaranteed never to alias with any existing pointer th...
2000 Aug 10
1
Problems with levels of factors
...inng to whatever criterion, it might well happen that not all levels of a factor are present in all new data frames. However, R doesn't seem to care about. When performing some kind of analysis seperately on the new frames, each time the unreduced number of levels is present. That can be very problematic, as a lot of methods tend to crash because no data are found for the "lost" level. Neither explicit setting of "data=data.frame.xyz" nor any straightforward use of "detach()" or "attach()" nor "levels(problem.factor)<-c("reduced","lev...
2009 May 18
10
Syslinux 3.81-pre4 (RC): halt on idle included
Hi all, I have pushed out Syslinux 3.81-pre4, which is now a release candidate for 3.81. This version includes halt on idle, and so I''m very keen on getting this tested. -hpa