Displaying 20 results from an estimated 200 matches similar to: "Plotting a Quadratic..."
2009 Apr 07
1
Concern with randomForest
Hi all,
When running a randomForest run using the following command:
forestplas=randomForest(Prev~.,data=plas,ntree=200000)
print(forestplas)
I get the following result:
Call:
randomForest(formula = Prev ~ ., data = plas, ntree = 2e+05,
importance = TRUE)
Type of random forest: regression
Number of trees: 2e+05
No. of variables tried at each split: 5
2009 Jun 08
1
Random Forest % Variation vs Psuedo-R^2?
Hi all (and Andy!),
When running a randomForest run in R, I get the last part of an output
(with do.trace=T) that looks like this:
1993 | 0.04606 130.43 |
1994 | 0.04605 130.40 |
1995 | 0.04605 130.43 |
1996 | 0.04605 130.43 |
1997 | 0.04606 130.44 |
1998 | 0.04607 130.47 |
1999 | 0.04606 130.46 |
2000 | 0.04605 130.42 |
With the first column representing the
2007 Apr 27
6
User Privileges and Dtrace
Dear Experts,
My customer is migrating to Solaris 10 from Solaris 8 and have asked me to determine if: With Dtrace, is the user limited to probing only processes they own?
The customer has a general security requirement to control user access via management of privileges. Currently, on Solaris 8, LDAP is strongly while RBAC is weakly applied. This will likely change in the Solaris 10 production
2011 Jan 11
2
Differences between puppet and puppetd
Hi all,
I am using Puppet to execute an Expect script (http://expect.sourceforge.net)
on a client. The Puppet recipe, test.pp, is:
exec { ''/root/test.exp'':
command => ''/root/test.exp'',
logoutput => true
}
The recipe runs correctly when run using ''puppet --debug --verbose test.pp'':
debug: /Stage[main]//Exec[/root/test.exp]:
2001 Nov 22
0
winbindd, getent, primary group issue
Greetings all,
I am running winbindd running quite nicely on a suse 7.3 system.
(samba 2.2.2)
One issue (until now:-): I discovered that new created files
are created with the gid associated with the primary group of the particular user
which is fine and desired.
However: 'getent passwd' lists all users with the gid set to 10000 which
happens to be mapped to the 'Domain users'
2007 Sep 14
4
how to route outgoing calls on IP-level
Dear Sirs,
out asterisk server has multiple network cards.
I want some outgoing calls (from several extensions) to use one IP address,
and others to go through
another address.
is there a way to achive that using asterisk ?
Cheers,
Kate
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2007 Sep 05
4
special kind of billing
Dear Sirs,
we ...
1) buy minutes from other providers
2) sell minutes to out clients
some calls terminate to our equipment, others - to h323 proxies.
we want calls to be routed according to costs (a route is chosen from many
by lowest cost).
at the end of it, we'd like to bill our clients and see how much have we
earned (money we receive from client on one side, money we pay to
proxies on
2004 Oct 06
0
quadratically constrained quadratic programming
Hi,
Does anybody have experience to solve an quadratic programming problem
with quadratic constraints in R?
It seems that the package "quadprog" only handles the quadratic
programming with linear constraint. My probelm is to maximze
x^T\Sigma_{xy} y,
subject to x^Tx=1, y^T\Sigma_{yy} y=1, and sum(y)<t, or sum(y)=t, where
x and y are the variable, and the Sigma's and t are
2012 Apr 17
1
What functions are available for Quadratically Constrained Quadratic Programming in R?
Hi all,
Could anybody please point me to the solver function in R on QCQP?
The quadprog package seems to be only able to handle the linear
constraints...
Thank you!
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2007 Aug 17
1
Quadratic Programming
Hi there,
Is it basically possible to solve a non-convex quadratic programming with optimal solution by any way? What could be the way? How can be this problem dealt with? Could you guide me to some references please?
I thank you very much for eny help.
Tobi
---------------------------------
Boardwalk for $500? In 2007? Ha!
---------------------------------
2007 Jul 11
0
Some questions about quadratic programming (QP)
Dear R Users ,
As a beginner in QP, I'm trying to solve a Support Vector Machine problem by a QP. In particulare I am using the quadprog package.
My questions are here:
1- In the document for the package (The quadprog Package), the inequality constraint is mentioned with >= , however in a standard QP, this usaully is written with <= . This constraint should be multiplied by a
2009 Mar 27
0
Quadratic Discriminant Analysis (qda)
Hi listers,
Does anybody knows if the function qda for quadratic discriminant analysis
provides the coefficients of quadratic discriminants...
Well, I find out that for the linear discriminant analysis lda, the fonction
provides the coefficients...
Thanks in advance,
Marcio
--
View this message in context: http://www.nabble.com/Quadratic-Discriminant-Analysis-%28qda%29-tp22747647p22747647.html
2000 Mar 08
0
Linear/Quadratic Programming
Hi,
***** First, let me apologize for the disclaimer that accompanies my mail. I
don't add it and I can't take it out. ****
Is there any implementation of Linear/Quadratic programming in R?
Thanks.
Mustaque
This message contains confidential information and is intended only
for the individual named. If you are not the named addressee you
should not disseminate, distribute or copy
2013 Jun 11
0
Rao's quadratic entropy with fuzzy coded trait data
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2007 Dec 22
0
regarding lack of quadratic term in solve.qp
I was thinking about my solve.qp problem on my way home tonight and I think
I can fix it by making Dmat the identity matrix. I'll check this weekend to
make sure
but my thinking is that doing this will make all the "variances" the same so
that they shouldn't come into play during the evaluation of the objective
function.
Thanks though for any confirmation of this or other
2005 Mar 26
1
lme: random effects of a quadratic term
Hello,
I am estimating the following model:
so2.lme<-lme(so2~1+I(alcadakm^2)+dia,data=subjectes2,na.action=na.omit)
And when I try to plot the random effects of the quadratic term with
respect to a covariate (mam) I get an error:
> so2.lmeRE<-ranef(so2.lme,augFrame=T)
> plot(so2.lmeRE,form=I(alcadakm^2)~mam)
Error in plot.ranef.lme(so2.lmeRE, form = I(alcadakm^2) ~ mam ) :
Only
2012 Jul 24
2
QUADRATIC PROGRAMMING
hi,
what code in R would I use to solve the problem below?
An apartment complex has 250 apartments to rent.If they rent x apartments then their monthly profit is given by:
p(x)= -8^x^2 + 3200x -80000
Thanks.
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2010 Nov 28
1
Finding root of quadratic equation
Dear R Helpers,
I need to find the root of following equation.
0.0016^2 = (0.001*x)^2 + (0.002 * (1-x))^2 + 2 * 0.7 *0.001*0.002 * x * (1-x).
I had tried using "animation " package as follows.
# My Code
library(animation)
ani.options(nmax = 500)
solu = newton.method(function(x) 0.0016^2 - 0.001^2*x^2 - 0.002^2*(1-x)^2 - 2*0.7*0.001*0.002*x*(1-x), 1, c(-1,1))
solu$root
#
2010 Dec 04
1
Quadratic programming with semi-definite matrix
Hello.
I'm trying to solve a quadratic programming problem of the form min
||Hx - y||^2 s.t. x >= 0 and x <= t using solve.QP in the quadprog
package but I'm having problems with Dmat not being positive definite,
which is kinda okay since I expect it to be numerically semi-definite
in most cases. As far as I'm aware the problem arises because the
Goldfarb and Idnani method first
2012 Aug 23
0
QUADRATIC LINK FUNCTIONS FOR MLE ESTIMATE OF NON-STATIONARY GEV FITS
Hi All,
I am a newcomer to S/R. Could you please let me know how to model quadratic
trends for the mul/sigl link functions when fitting non-stationary GEV
distributions using the ismev package?
Thanks
Best Regards,
Mohammad Ashrafuz Zaman
PhD Candidate
School of Engineering
Building XC, Room 1.02 (Kingswood Campus)
University of Western Sydney
Locked Bag 1797, Penrith South DC
NSW 1797