search for: kmo

...Kaiser-Meyer-Olkin Measures of Sampling Adequacy. (http://tolstoy.newcastle.edu.au/R/help/05/12/17233.html) As it turns out, last year Trujillo-Ortiz et al. at the Universidad Autonoma de Baja California wrote and posted a script for MATLAB that does the job. You can see it (with a discussion of KMO statistics) at http://www.mathworks.com/matlabcentral/fileexchange/loadFile.do?objectId=12736 Please see their post for documentation/citations/references, etc. I translated the code into R-speak and added a little to the output; the function and an example are copied below. You can just copy/pa...

Dear colleagues, I've been searching for information on the Kaiser-Meyer-Olkin (KMO) Measure of Sampling Adequacy (MSA). This statistic is generated in SPSS and is often used to determine if a dataset is "appropriate" for factor analysis -- it's true utility seems quite low, but it seems to come up in stats classes a lot. It did in mine, and a glance through...

Hi All, How do i calculate KMO for a dataset? *Dataset:---------------------* m1 m2 m3 m4 m5 m6 m7 m8 1 2 20 20 2 1 4 14 12 2 9 16 3 5 2 5 5 15 3 18 18 18 13 17 9 2 4 4 7 7 2 12 2 11 11 11 5 7 8 5 19 5 2 20 18 6 7 4 7 4 7 9 3 3 7 5 5 5 12 5 13 13 12 8...

On Wed, 28 Aug 2013 14:00:10 -0700 Kent Overstreet <kmo at daterainc.com> wrote: > On Wed, Aug 28, 2013 at 01:25:50PM -0700, Andrew Morton wrote: > > On Wed, 28 Aug 2013 12:55:17 -0700 Kent Overstreet <kmo at daterainc.com> wrote: > > > > > Fixup patch, addressing Andrew's review feedback: > > > > Look...

On Wed, 28 Aug 2013 14:00:10 -0700 Kent Overstreet <kmo at daterainc.com> wrote: > On Wed, Aug 28, 2013 at 01:25:50PM -0700, Andrew Morton wrote: > > On Wed, 28 Aug 2013 12:55:17 -0700 Kent Overstreet <kmo at daterainc.com> wrote: > > > > > Fixup patch, addressing Andrew's review feedback: > > > > Look...

Hello Dear R user, I want to conduct a Principal components analysis and I need to run two tests to check whether I can do it or not. I found how to run the KMO test, however i cannot find an R fonction for the Bartlett's test of sphericity. Does somebody know if it exists? Thanks for your help! Thibault [[alternative HTML version deleted]]

On Wed, 28 Aug 2013 12:55:17 -0700 Kent Overstreet <kmo at daterainc.com> wrote: > Fixup patch, addressing Andrew's review feedback: Looks reasonable. > lib/idr.c | 38 +++++++++++++++++++++----------------- I still don't think it should be in this file. You say that some as-yet-unmerged patches will tie the new code into...

On Wed, 28 Aug 2013 12:55:17 -0700 Kent Overstreet <kmo at daterainc.com> wrote: > Fixup patch, addressing Andrew's review feedback: Looks reasonable. > lib/idr.c | 38 +++++++++++++++++++++----------------- I still don't think it should be in this file. You say that some as-yet-unmerged patches will tie the new code into...

...>> On 17 June 2011 12:43, thibault grava <thibault.grava at gmail.com> wrote: >>> Hello Dear R user, >>> >>> I want to conduct a Principal components analysis and I need to run two >>> tests to check whether I can do it or not. I found how to run the KMO >>> test, however i cannot find an R fonction for the Bartlett's test of >>> sphericity. Does somebody know if it exists? >>> >>> Thanks for your help! >>> >>> Thibault >>> >>> ? ? ? ?[[alternative HTML version deleted]] &g...

...ocuments/R/functions/andersen.R") source("/Users/simon/Documents/R/functions/tabfun.R") source("/Users/simon/Documents/R/functions/cox_snell.R") source("/Users/simon/Documents/R/functions/cor.prob.R") source("/Users/simon/Documents/R/functions/kmo.R") source("/Users/simon/Documents/R/functions/residual.stats.R") source("/Users/simon/Documents/R/functions/missings.plot.R") } but then, when I type .First from the command line I get function () { source("/Users/simon/Documents/R/functions/s...

On Wed, 28 Aug 2013 12:53:17 -0700 Kent Overstreet <kmo at daterainc.com> wrote: > > > + while (1) { > > > + spin_lock(&pool->lock); > > > + > > > + /* > > > + * prepare_to_wait() must come before steal_tags(), in case > > > + * percpu_ida_free() on another cpu flips a bit in > &g...

On Wed, 28 Aug 2013 12:53:17 -0700 Kent Overstreet <kmo at daterainc.com> wrote: > > > + while (1) { > > > + spin_lock(&pool->lock); > > > + > > > + /* > > > + * prepare_to_wait() must come before steal_tags(), in case > > > + * percpu_ida_free() on another cpu flips a bit in > &g...

On Wed, 28 Aug 2013 13:44:54 -0700 Kent Overstreet <kmo at daterainc.com> wrote: > > > > What guarantees that this wait will terminate? > > > > > > It seems fairly clear to me from the break statement a couple lines up; > > > if we were passed __GFP_WAIT we terminate iff we succesfully allocated a > > &g...

On Wed, 28 Aug 2013 13:44:54 -0700 Kent Overstreet <kmo at daterainc.com> wrote: > > > > What guarantees that this wait will terminate? > > > > > > It seems fairly clear to me from the break statement a couple lines up; > > > if we were passed __GFP_WAIT we terminate iff we succesfully allocated a > > &g...

On Wed, Aug 28, 2013 at 02:10:19PM -0700, Andrew Morton wrote: > On Wed, 28 Aug 2013 14:00:10 -0700 Kent Overstreet <kmo at daterainc.com> wrote: > > > On Wed, Aug 28, 2013 at 01:25:50PM -0700, Andrew Morton wrote: > > > On Wed, 28 Aug 2013 12:55:17 -0700 Kent Overstreet <kmo at daterainc.com> wrote: > > > > > > > Fixup patch, addressing Andrew's review feedback:...

On Wed, 28 Aug 2013 14:23:58 -0700 Kent Overstreet <kmo at daterainc.com> wrote: > > I found things to be quite the opposite - it took 5 minutes of staring, > > head-scratching, double-checking and penny-dropping before I was > > confident that the newly-added code actually has nothing at all to do > > with the current code....

On Wed, 28 Aug 2013 14:23:58 -0700 Kent Overstreet <kmo at daterainc.com> wrote: > > I found things to be quite the opposite - it took 5 minutes of staring, > > head-scratching, double-checking and penny-dropping before I was > > confident that the newly-added code actually has nothing at all to do > > with the current code....

On Fri, 16 Aug 2013 23:09:06 +0000 "Nicholas A. Bellinger" <nab at linux-iscsi.org> wrote: > From: Kent Overstreet <kmo at daterainc.com> > > Percpu frontend for allocating ids. With percpu allocation (that works), > it's impossible to guarantee it will always be possible to allocate all > nr_tags - typically, some will be stuck on a remote percpu freelist > where the current job can't get...

On Fri, 16 Aug 2013 23:09:06 +0000 "Nicholas A. Bellinger" <nab at linux-iscsi.org> wrote: > From: Kent Overstreet <kmo at daterainc.com> > > Percpu frontend for allocating ids. With percpu allocation (that works), > it's impossible to guarantee it will always be possible to allocate all > nr_tags - typically, some will be stuck on a remote percpu freelist > where the current job can't get...

...time; I'd love R to do it in a big layout for all the variables in the data frame. 3. Descriptive statistics of each variable. Jim Lemon's excellent dstats() function does this. Solved. 4. A large correlation matrix for the data frame. The built-in function cov() does this. Solved. 5. KMO (Kaiser-Meyer-Olkin Measure of Sampling Adequacy) and Bartlett test of sphericity on the data frame as a whole. I can't find ways to recreate these tests -- bartlett.test() doesn't produce the type of response that makes sense. 6. Anti-image matricies, including MSA (sampling adequacy)...