Displaying 20 results from an estimated 4000 matches similar to: "Cluster analysis on weighted survey data with continuous and categorical variables"
2010 Nov 30
2
excluding factors from sampling
Hello,
I am trying to write a function that first requires randomly sampling items
from a set of factors. I need to be able to sample from that same set of
factors, but exclude the ones that have already been sampled previously. For
example, suppose I have a set of items a-j (a,b,c,d,e,f,g,h,i, and j) and
randomly sample a, c, and f from that group. How do I sample again from the
larger group
2001 Feb 07
5
zero inflated poisson and censored-continuous models
I wonder if there is a package that will estimate a Zero Inflated Poisson
Model (ZIP), and also if there is a package that will estimate what is
called the Tobit model: that is a combination of censored and observed
values in the same sample.
Georgina Bermann
Biostatistics
AstraZeneca R&D M?lndal
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r-help mailing
2004 Sep 10
2
Re: nice idea
--- Hod McWuff <hod@wuff.dhs.org> wrote:
> On Fri, 2002-10-04 at 10:26, Marco "elcabesa" Belli wrote:
> > oversampling.. i maean digitally change the wave file rate form
> 44khz to 440
> > khz
> >
> > it make next sample easyer predictable
>
> OK, IANASPE (signal processing engineer) but it seems to me that if a
> simple shift like that can
2005 Apr 06
3
Standard encoding rates?
On Tue, Apr 05, 2005 at 08:26:45AM -0700, Ralph Giles wrote:
> AM radio is lower quality (mono) but I don't know
> what the digital equivalent would be.
Just a minor nit-pick: AM radio can be stereo. However its use is almost
nonexistent. See <http://users.hfx.eastlink.ca/~amstereo/amstereo.htm>
for more information.
> Telephone is nominally 8 kHz mono
> (i.e. really bad)
2004 Sep 10
2
nice idea
some times ago i was playing with coding, shannon theoremes and other stuff,
i have tried without success to compress audio wave, and i have notice that
simply oversampling audio material enacnhe a lot compression ratio
i only take awav file, oversampled it by 20 tiimes and then compressi it
using pkzip or rar.
i don0't remember if i also do a CONSTANT PREDICTION,
iony know that pkzip and
2004 Sep 10
2
Re: nice idea
constant prediction
see this page
http://flac.sourceforge.net/format.html
oversampling.. i maean digitally change the wave file rate form 44khz to 440
khz
it make next sample easyer predictable
if i'll found my old work i'll tell you how much compression i could achieve
2017 Jan 05
4
Regresión Logística desbalanceada
Hola Comunidad, Feliz Año 2017:
Tengo un problemilla con una regresión logística desbalanceada, tengo
demasiados TRUE (93%). ¿Sabría alguién alguna forma de corregir el
problema con R?
Un slaudo,
Milagros Camacho
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2016 Dec 09
4
trouble installing centos 6.8
Dear all,
I'm having trouble installing Centos 6.8, in a VM using VirtualBox, and
hoping that someone on this distribution can help.
I'm running VirtualBox Version 5.1.4 r110228 (Qt5.5.1).
I downloaded .iso files for Centos 6.8:
- CentOS-6.8-x86_64-bin-DVD1.iso
- CentOS-6.8-x86_64-bin-DVD2.iso
I proceeded to set up a new VM, selecting Linux / RedHat 64 bit. I
selected the DVD1 iso
2013 Mar 31
1
Creating new instances from original ones
I have a question about data mining. I have a dataset of 70 instances with
14 features that belong to 4 classes. As the number of each class is not
enough to obtain a good accuracy using some classifiers( svm, rna, knn) I
need to "oversampling" the number of instances of each class.
I have heard that there is a method to do this. It consists in generating
these new instances as follows:
2016 Dec 09
3
trouble installing centos 6.8
On Fri, 9 Dec 2016 12:46:11 -0700
Emma M Birath wrote:
> > I proceeded to set up a new VM, selecting Linux / RedHat 64 bit. I
> > selected the DVD1 iso file above as "IDE Primary Master" and the DVD2
> > as "IDE Secondary Master".
I have personally always had the best luck by installing the Live CD, and then customizing the installation from there. This
2009 Mar 11
3
Mixed models fixed effects
Dear All,
This may sound like a dumb question but I am trying to use a mixed model to
determine the predictors of bat activity along hedges within 8 sites. So my
response is continuous (bat passes) my predictors fixed effects are
continuous (height metres), width (metres) etc and the random effect is
site - can you tell me if the fixed effects can be continuous as all the
examples I have
2020 Sep 04
4
Acls
Hi I have some problems with setting permissions on my share. I think it has to do that I didn?t configure this
If you use the winbind 'ad' backend on Unix domain members and you add a gidNumber attribute to the Domain Admins group in AD, you will break the mapping in idmap.ldb. Domain Admins is mapped as ID_TYPE_BOTH in idmap.ldb, this is to allow the group to own files in Sysvol on a
2008 Dec 05
3
Logical inconsistency
Dear colleagues
Please could someone kindly explain the following inconsistencies I've discovered when performing logical calculations in R:
8.8 - 7.8 > 1
> TRUE
8.3 - 7.3 > 1
> TRUE
Thank you,
Emma Jane
[[alternative HTML version deleted]]
2005 Sep 21
3
Multiple density plots on 1 graph
I want to overlay 50 denisty plots on a single plot.
For each plot there are 10,000 data points and i want
the empirical density of the data. I have not been
able to find an easy way to achieve this (I have
scoured the manula and website so sorry if I missed
it!), does anyone have any suggestions?
Thankyou.
2011 Jan 10
5
Changing a logical matrix into a numeric matrix
Hi,
I would like to turn my TRUE/FALSE matrix into a 1/0 matrix (i.e. True=1 and
False=0)
[,1] [,2] [,3]
[1,] TRUE FALSE FALSE
[2,] TRUE TRUE FALSE
[3,] TRUE TRUE TRUE
[,1] [,2] [,3]
[1,] 1 0 0
[2,] 1 1 0
[3,] 1 1 1
Is there a quick way of doing this without a loop?
Thanks Emma
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2003 Jun 20
1
User can delete file when they have no read/write access
Im haveing a problem with my profiles share on my Samba 2.2.3 PDC server.
I have a share like this:
[profiles]
path = /home/samba/profiles
writeable = yes
create mask = 0700
directory mask = 0700
browsable = no
valid users = root,@smbusers
The roaming profile works just fine with windows2k, and the users can't read the other profiles (they get a "access
2020 Jun 03
2
Fwd: I cannot change value of global variable in LLVM IR using IRBuilder
I don't think it's the same problem as you described. By printing I meant
calling printf function and passing my global variable as one of the
arguments.
My code:
Instruction* InstructionVisitor::incrementGlobalKey(Instruction* I) {
IRBuilder<> Builder(I->getContext());
Builder.SetInsertPoint(I->getNextNode());
GlobalVariable* key =
2002 Mar 07
2
Access denied error
I have installed SAMBA (latest version) on my solaris machine, and I have
gone through all the specified steps to configure it.
I am trying to view the share (just "home") from a DOS window in Windows
2000, using :
> net view \\myUNIXbox and am getting :
System Error 5 has occurred.
Access is denied
Any suggestions greatly appreciated.
Please reply to me at
2011 Dec 07
1
using sample
Hi,
Can anyone help sort out the problem with the following script - I am a R
newbie and I am self taught.
obs.all = c()
for(i in 1:386){
if (n.sim[i]>0){
obs = (1:133429)[event.details[,2] == i]
obs.all = c(obs.all, sample(obs[obs < n.sim[i]], size = n.sim[i],
replace=T))
}
Basically, in the sample bit, I only want to get obs.all if the value of
2011 Dec 13
2
Generating input population for microsimulation
Hi all,
I've been struggling with some code and was wondering if you all could help.
I am trying to generate a theoretical population of P people who are housed within X different units. Each unit follows the same structure- 10 people per unit, 8 of whom are junior and two of whom are senior. I'd like to create a unit ID and a unique identifier for each person (person ID, PID) in the