Displaying 13 results from an estimated 13 matches for "ipops".
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2005 Oct 19
1
ipop (kernlab) gives pars < lower bound ?
hi everyone,
ipop very quickly and accurately identifies the correct parameters in
a toy dataset i built, but when i use ipop on the real dataset i get
values for the parameters " primal(res) " that are less than zero,
even though i specify zero for the lower bound : l = rep(0,
length(c)) , where length(c) is the number of parameters i'm trying to
identify.
the parameters are
2008 May 07
0
Fwd: Re: Solution of function
Forgot to send one copy to R help. Sorry
Megh Dal <megh700004@yahoo.com> wrote: Date: Wed, 7 May 2008 02:45:09 -0700 (PDT)
From: Megh Dal <megh700004@yahoo.com>
Subject: Re: [R] Solution of function
To: Berwin A Turlach <berwin@maths.uwa.edu.au>
Hi Berwin,
Thanks for having look on my problem. However on ipop() function I see following:
ipop solves the quadratic
2005 Dec 06
1
Dovecot.conf
Hi,
I am mounting a server of email with the Dovecot as MUA, i would like
to restrict the access to imap and ipop to one determined range of IP.
As I configure this in dovecot.conf, I did not understand the
functioning of listen = * or [: ]
Thanks a lot,
Clovis
--
Cl?vis Trist?o
-------------------:-oo)----
Seja Legal, use GNU/Linux
----------------------------------------
2007 Jul 02
1
QP for solving Support Vector Regression
Dear R users,
I'm trying to run the Support Vector Regression by a general quadratic programming function like ipop ( ) in kernlab or solve.QP ( ) in quadprog packages.
Since they are general, their application in Support Vector Regression can lead to misunderstanding, particularly when constructing matrices. Even their examples are general and applied in Support Vector
2010 Nov 24
2
Need Internet Explorer 6 or 7
...plorer - and I am a Mac user. Yes, I've contacted them, many times - many levels, and just hit a brick wall each time. The website states:
The State Controller's Office currently supports Internet Explorer 6.0 and 7.0. When accessing the following SCO applications: Form-W2, I-TIME, IBIS, IPOPS, Online Pay Stubs, Online Reporting, P-Card and Travel Express, Internet Explorer 6.0 or 7.0 is required. Though other browsers exist, the SCO only supports Internet Explorer 6.0 and 7.0. Some SCO applications may be accessed with other browsers, but complete functionality is not guaranteed.
It i...
2012 Mar 16
1
quadprog error?
I forgot to attach the problem data, 'quadprog.Rdata' file, in my prior
email.
I want to report a following error with quadprog. The solve.QP function
finds a solution to the problem below that violates the last equality
constraint. I tried to solve the same problem using ipop from kernlab
package and get the solution in which all equality constraints are
enforced. I also tried an old
2009 Oct 04
3
error installing/compiling kernlab
Hi everybody,
I''m using R on a 64-bit Ubuntu 9.04 (Jaunty). I prefer to install R
packages from source, even if they are available in Synaptic. The
problem is that I can''t install/compile kernlab. Everything works fine
until it gets to the lazy loading part:
** preparing package for lazy loading
Creating a new generic function for "terms" in "kernlab"
2005 Oct 13
3
Optim with two constraints
Hi R-list,
I am new to optimization in R and would appreciate help on the following
question. I would like to minimize the following function using two
constraints:
######
fn <- function(par,H,F){
fval <- 0.5 * t(par) %*% H %*% par + F%*% par
fval
}
# matrix H is (n by k)
# matrix F is (n by 1)
# par is a (n by 1) set of weights
# I need two constraints:
# 1.
2006 Nov 27
0
kernlab 0.9-0 on CRAN
A new version of kernlab has just been released.
kernlab is a kernel-based Machine Learning package for R.
kernlab includes the following functions:
o ksvm() : Support Vector Machines for classification, regression,
novelty detection, native multi-class classification, support
for class-probability output and confidence intervals in
regression.
o gausspr()
2006 Nov 27
0
kernlab 0.9-0 on CRAN
A new version of kernlab has just been released.
kernlab is a kernel-based Machine Learning package for R.
kernlab includes the following functions:
o ksvm() : Support Vector Machines for classification, regression,
novelty detection, native multi-class classification, support
for class-probability output and confidence intervals in
regression.
o gausspr()
2009 May 27
1
Constrained fits: y~a+b*x-c*x^2, with a,b,c >=0
I wonder whether R has methods for constrained fitting of linear models.
I am trying fm<-lm(y~x+I(x^2), data=dat) which most of the time gives
indeed the coefficients of an inverted parabola. I know in advance that
it has to be an inverted parabola with the maximum constrained to
positive (or zero) values of x.
The help pages for lm do not contain any info on constrained fitting.
Does anyone
2007 Dec 05
1
Quadratic programming
Hi,
I'm quite new at R and I haven't found the answer to my question anywhere on the net, so either it is trivial or not documented. So, bare with be.
I am using the quadprog package and its solve.QP routine to solve and quadratic programming problem with inconsistent constraints, which obviously doesn't work since the constraint matrix doesn't have full rank. A way to solve this
2009 Jun 01
1
installing sn package
Hi r-users,
I want to use the sn package but I got the following message:
> install.packages(repos=NULL,pkgs="c:\\Tinn-R\\sn_0.4-12.zip")
Warning: package 'sn' is in use and will not be installed
updating HTML package descriptions
I did tried to do it a few times but it gives the same message.
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