Displaying 20 results from an estimated 700 matches similar to: "Elbow criterion"
2008 Mar 08
1
Elbow criterion plots for determining k in hierarchical clustering
Hi There,
I'm working on some cluster analyses on a large data-set using hclust with
Wards method and Manhattan (city block) distance measures. I've created
dendrograms to illustrate the clustering criteria, but would like to create
a plot to examine for the classic elbow criterion to use in determining the
best number of clusters. Ideally I'd like to plot percent variance
explained
2012 Mar 28
1
Nested brew call yields Error in .brew.cat(26, 28) : unused argument(s) (26, 28)
I am writing several webpages using the brew package and R2HTML. I would
like to work off one script so I am using nested brew calls. The
documentation for brew states that:
"NOTE: brew calls can be nested and rely on placing a function named
?.brew.cat? in the environment in which it is passed. Each time brew is
called, a check for the existence of this function is made. If it
exists,
2016 Apr 12
1
Dissimilarity matrix and number clusters determination
Hi,
I already have a dissimilarity matrix and I am submitting the results to
the elbow.obj method to get an optimal number of clusters. Am I reading
the below output correctly that I should have 17 clusters?
code:
top150 <- sampleset[1:150,]
{cluster1 <- daisy(top150
, metric = c("gower")
, stand = TRUE
, type = list(symm
2017 Jun 18
2
Stereo dropping to mono with libopus 1.2 RC
OK, so at the link : https://uloz.to/!yyVrCY2Y8sn1/devil-s-elbow-opus-7z
(https://uloz.to/%21yyVrCY2Y8sn1/devil-s-elbow-opus-7z) (change the language
to English by clicking at the flag at the right upper side of the web page
or just simply click at "Stáhnout pomalu" - it may take some time as the
file is 55 MB+ and the download service is free) there is 7zip archive with
5 music
2017 Jun 19
1
Stereo dropping to mono with libopus 1.2 RC
Hello Jean-Marc, yes, it works for both 32 and 48 kb/s. Also this option
marginally increases the size of the file which is understandable. I tried a
few other music files and found that this stereo narrowing happens not only
in the case of track I submitted (although in smaller scale) so it would be
great if the final libopus 1.2 had officialy a parameter to force music
"mode" of
2011 Feb 14
1
Optimal Y>=q cutoff after logistic regression
Hi,
I understand that dichotimization of the predicted probabilities after
logistic regression is philosophically questionable, throwing out
information, etc.
But I want to do it anyway. I'd like to include as a measure of fit %
of observations correctly classified because it's measured in units
that non-statisticians can understand more easily than area under the
ROC curve, Dxy, etc.
2004 Jun 28
3
How to determine the number of dominant eigenvalues in PCA
Dear All,
I want to know if there is some easy and reliable way
to estimate the number of dominant eigenvalues
when applying PCA on sample covariance matrix.
Assume x-axis is the number of eigenvalues (1, 2, ....,n), and y-axis is the
corresponding eigenvalues (a1,a2,..., an) arranged in desceding order.
So this x-y plot will be a decreasing curve. Someone mentioned using the elbow (knee)
2006 Mar 24
2
Return all rows, split then show uniques
I''m returning some rows from a tags database that look like this:
ID WORDS
1. apple banana pear
2. banana melon
3. apple peach lime
What I want to do with that data is use the .split method to divide them
into separate values in an array, then use the .uniq method to return a
unique list of the words like so:
apple, banana, pear, melon, peach, lime
So in my controller I
2012 Sep 04
3
Tendonitis and R users
Hello
This request asks something beyond the technicalities of the R language, I would like to ask you wonderful people if you have ever suffered as programmers ( or de facto programmers like myself though I am a 'research assistant') from tendonitis and how you coped with it, i have golfer's elbow on both sides. Any resources?
Pancho Mulongeni
Namibia
2006 May 17
2
Asterisk & Meridian Tie Line
<p>I am new to the group but have searched the doc's FAQ's etc before posting here.</p><p> We are attempting tie our asterisk server/service to the building's PBX, the building is in the UK and the local PBX is a meridian option 11 installed and mainteined by BT.</p><p>BT Have installed a NTBK50AA E1-PRI card in the meridian with daughter cards
2017 Jun 18
1
Stereo dropping to mono with libopus 1.2 RC
Hello, I'm not a programmer or Opus developer but I tried to test the sound
quality of a music file (Nick Warren - Devil's Elbow, freely available from
the author's Soundcloud account) encoded with libopus 1.2 RC1. I used
Windows binaries from free-codecs.com. I noticed that in the case of my
selected music file (which is generally harsh on lossy codecs as it's
necessary to
2006 Jan 21
1
SIP and NAT - best practices?
Thanks Moises. I was kind of hoping that, at least if I hosted my Asterisk
server somewhere where there was no NAT for the * box that the SIP phones
wouldn't create any issues.
How do you people with Hosted PBX handle the deployment of SIP phones behind
NAT firewalls? Is it just elbow grease and configuring every single phone
for the customer, or is there a way?
Mike
you can redirect
2020 Nov 01
1
ups.test.result meaning
On Sunday 01 November 2020 09:02:56 Charles Lepple wrote:
> Gene,
>
> you might have missed this email, and I admit I wasn't very precise
> with my wording.
Yes, or at least I don't recall it, which at my age IS a possibility.
More below as needed.
> This particular UPS model is returning a fixed (in the sense of
> "constant") integer "24" (not
2003 Feb 21
2
pam settings for winbind
This is more of a pam question then a samba question, but I thought I'd
start here and see if I can get an answer.
I've gotten pam_winbind.so working with gdm (on RHAT 8) using the
following /etc/pam.d/gdm file. I've put + signs to show the lines I
added I added to the stock RHAT 8 gdm pam def.:
#%PAM-1.0
+ auth sufficient /lib/security/pam_winbind.so
+ auth
2017 Jan 03
2
[R] Problems when trying to install and load package "rzmq"
Possibly so.
However, the ZeroMQ libraries do exist for Windows, so it might be possible to get the package working there. However, CRAN probably won't have the libraries, so cannot produce a binary package, and it is also quite possible that the package author is not a Windows person.
At the very least, you'll need some familiarity with the Windows toolchain and be prepared to apply a
2017 Jun 19
0
Stereo dropping to mono with libopus 1.2 RC
Hi Matěj,
I had a look at your files and it seems like the issue is that the
speech/music detector thinks that some segments are speech rather than
music and at low bitrates SILK tends to significantly narrow the stereo
image. We're planning on adding an option to opusenc to force it to
treat the input as speech/music. Just to confirm that's the issue, can
you try encoding with the
2010 Aug 18
1
Plotting K-means clustering results on an MDS
Hello All,
I'm having some trouble figuring out what the clearest way to plot my
k-means clustering result on an my existing MDS.
First I performed MDS on my distance matrix (note: I performed k-means on
the MDS coordinates because applying a euclidean distance measure to my raw
data would have been inappropriate)
canto.MDS<-cmdscale(canto)
I then figured out what would be my optimum
2020 Jun 18
3
FileCheck
> On Jun 18, 2020, at 14:32, Chris Lattner via llvm-dev <llvm-dev at lists.llvm.org> wrote:
>
> 2) Instead of dumping the entire input by default, would it be reasonable to change the default “make check” to have FileCheck print the 10 lines before and after the mismatch? Most problems are close by the check failure. If you want to check extra fancy, dump the CHECK-LABEL region.
2011 Feb 21
0
list of features from svmpath?
How can I get the list of non-zero features from svmpath at any given
lambda? All I get is following information and information about what
features were selected. In Iris example, we have 4 features and 60 cases. In
my own example which is 200cases by 300 features, I can't figure out how to
print the list of non-zero (beta) or features from svmpath.
Any help? Thanks.
----------------
>
2011 Jun 07
1
assign a cluster based on a variable
Hi,
I have two matrices of the following form:
cluster (n=18):
12062 1
12063 2
12064 2
12065 3
12066 5
KreisSA (n=2304)
12062
12062
12067
12065
12063
12067
I try to assign the cluster[,2] to KreisSAa by the follwoing loop:
n <- nrow(cluster)
KreisSAa <- numeric()
for(i in 1:n){
KreisSAa[KreisSA == cluster[i,1]] <- cluster[i,2]
}
The result is a vector of the length n=4608