search for: maxlik

Displaying 20 results from an estimated 24 matches for "maxlik".

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2009 May 16
1
maxLik pakage
Hi all; I recently have been used 'maxLik' function for maximizing G2StNV178 function with gradient function gradlik; for receiving this goal, I write the following program; but I have been seen an error  in calling gradient  function; The maxLik function can't enter gradlik function (definition of gradient function); I guess my mi...
2020 Oct 08
0
[External] Re: unable to access index for repository...
...models the newer R would converge with not-so-nice gradients while R-3.0.3 would still do nicely (good gradient). I use numerical graduent of course. I wonder whether numerical gradient routine were revised at the time of transition from R-3.0.3 to newer. Not knowing how different your versions of maxLik are between, I will try as I said I would, that is, use new version of maxLik from old R and vice versa, and see what happens. Sent from my iPhone Beware: My autocorrect is crazy > On Oct 9, 2020, at 4:28 AM, Arne Henningsen <arne.henningsen at gmail.com> wrote: > > ?Hi Steven &gt...
2009 May 11
1
maxLik package
Hi all. Recently i have been used maxlik package for optimizing a function with 5 parameters but i couldn't define gradient argument in function maxLik; How i can define a command to receive my goal? Whether I can change the core of this package?   Thanks for your attention and reply A. kheradmandi [[alternative HTML versi...
2020 Oct 08
2
[External] Re: unable to access index for repository...
Hi Steven Which optimisation algorithms in maxLik work better under R-3.0.3 than under the current version of R? /Arne On Thu, 8 Oct 2020 at 21:05, Steven Yen <styen at ntu.edu.tw> wrote: > > Hmm. You raised an interesting point. Actually I am not having problems with aod per se?-it is just a supporting package I need while using...
2020 Oct 09
1
[External] Re: unable to access index for repository...
...really post *reproducible* code giving evidence to your claim. As was mentioned earlier, the difference may not be in R, but rather in the versions of the (non-base R, but "extension") R packages you use; and you were saying earlier you will check that (using the old version of the 'maxLik' package with a newer version of R and vice verso) and tell us about it. Thank you in advance on being careful and rational about such findings. With regards, Martin Maechler ETH Zurich and R core team > Not knowing how different your versions of maxLik are > between, I will...
2020 Oct 08
0
[External] Re: unable to access index for repository...
Hmm. You raised an interesting point. Actually I am not having problems with aod per se?-it is just a supporting package I need while using old R. The essential package I need, maxLik, simply works better under R-3.0.3, for reason I do not understand?specifically the numerical gradients of the likelihood function are not evaluated as accurately in newer versions of R in my experience, which is why I continue to use R-3.0.3. Because I use this older version of R, naturally I need...
2008 Mar 07
0
Packages micEcon, sampleSelection, and maxLik
Dear R Users: We have splitted up the micEcon package into three packages: a) Package "maxLik" provides tools for maximum likelihood estimations (see http://www.maxLik.org). b) Package "sampleSelection" provides tools for estimating Heckman-type sample selection/generalized tobit models (see http://www.sampleSelection.org). c) Package "micEcon&quo...
2008 Mar 07
0
Packages micEcon, sampleSelection, and maxLik
Dear R Users: We have splitted up the micEcon package into three packages: a) Package "maxLik" provides tools for maximum likelihood estimations (see http://www.maxLik.org). b) Package "sampleSelection" provides tools for estimating Heckman-type sample selection/generalized tobit models (see http://www.sampleSelection.org). c) Package "micEcon&quo...
2011 Apr 10
0
maxLik package.
Dear Sir/ Madam,   I have some enquiry in R about maxLik package where, in this package we have the usage  maxLik(logLik, grad, hess, start, method, iterlim, print.level)   when I used this with print.level equals to 3 I could have estimates of parameters at each iteration but I do not know how can I call the information in the level. Is there any wa...
2012 Dec 20
1
Problem with simulation
.... Sometimes for 100 iteration, my program works but sometimes give error message regarding some "built-in function" which I never used in my code. I have no idea about the problem. Any suggestion, comments or idea regarding this would be highly appreciable. Thanks. I have used ---- "maxLik()" and "BBsolve()" in my code. Error message shows regarding "optim()". Best regards. -- Rajibul Mian Grad Student, Maths & STATS, UWindsor, Canada. https://sites.google.com/site/rajibulmian/ [[alternative HTML version deleted]]
2009 Apr 03
2
Geometric Brownian Motion Process with Jumps
Hi, I have been using maxLik to do some MLE of Geometric Brownian Motion Process and everything has been going fine, but know I have tried to do it with jumps. I have create a vector of jumps and then added this into my log-likelihood equation, know I am getting a message: NA in the initial gradient My codes is hear # n<...
2004 Jan 20
0
nlminb function
Hello, I've got a program written in S-plus which I think is converted successfully to R with the exception of part of the opt.param function written. In S-plus it is: nlminb(start=x0, obj=negllgamma.f, scale=1, lower=c(0.01,0.0001), upper=c(10,0.9999), gamma=gamma, maxlik=maxlik, y=ldose, s=lse, max.iter = 1000, max.fcal = 1000)$par and so far with R I've got to: optim(par=x0, fn=negllgamma.f, method="L-BFGS-B", lower=c(0.01,0.0001), upper=c(10,0.9999), gamma=gamma, maxlik=maxlik, y=ldose, s=lse, control=list(maxit = 1000))$par howeve...
2020 Oct 08
2
[External] Re: unable to access index for repository...
...that important to you. Such is the nature of volunteer-developed open source software... so support your local experts. > > On October 8, 2020 10:22:54 AM PDT, Steven Yen <styen at ntu.edu.tw> wrote: > >Thanks for the help. I have a reason to continue with R-3.0.3. I used > >maxLik to estimate econometric models and some of them are better > >handled with R-3.0.3 (but not later)----a sad reality I do not like. > > > >Here is what I did. I downloaded > > > >https://cran-archive.r-project.org/bin/windows/contrib/3.0/aod_...
2011 Dec 04
3
Prediction from censReg?
Hi - First post, so excuse any errors in protocol: Wanted to ask if there's an easy way to use 'predict' with objects of class 'censReg', 'maxLik', 'maxim' or 'list'. Have a left-censored dataset, attempting to use a Tobit model and am working with the censReg package. I like how easy it is to move from glm models to predictions with 'predict' and wanted to ask if there was a way to do so with objects output from...
2013 Apr 24
1
pglm package: fitted values and residuals
I'm using the package pglm and I'have estimated a "random probit model". I need to save in a vector the fitted values and the residuals of the model but I can not do it. I tried with the command fitted.values using the following procedure without results: library(pglm) m1_S<-pglm(Feed ~ Cons_PC_1 + imp_gen_1 + LGDP_PC_1 + lnEI_1 +
2020 Oct 08
2
unable to access index for repository...
Thanks for the help. I have a reason to continue with R-3.0.3. I used maxLik to estimate econometric models and some of them are better handled with R-3.0.3 (but not later)----a sad reality I do not like. Here is what I did. I downloaded https://cran-archive.r-project.org/bin/windows/contrib/3.0/aod_1.3.zip and installed the zip file, which w...
2020 Oct 08
0
unable to access index for repository...
...if this issue is that important to you. Such is the nature of volunteer-developed open source software... so support your local experts. On October 8, 2020 10:22:54 AM PDT, Steven Yen <styen at ntu.edu.tw> wrote: >Thanks for the help. I have a reason to continue with R-3.0.3. I used >maxLik to estimate econometric models and some of them are better >handled with R-3.0.3 (but not later)----a sad reality I do not like. > >Here is what I did. I downloaded > >https://cran-archive.r-project.org/bin/windows/contrib/3.0/aod_1.3.zip > >and ins...
2009 Jun 10
0
License quandry in the Fedora sub-space of all R packages
...) R-fUtilities GPL-2 R-gam GPL-2 R-gdata GPL (>= 2) R-geoR GPL-2 R-gplots GPL (>= 2) R-Hmisc GPL (>= 2) R-igraph GPL (>= 2) R-kinship GPL (>= 2) R-leaps GPL-2 R-lmtest GPL-2 R-maps GPL (>= 2) R-maptools GPL (>= 2) R-maxLik GPL (>=2) R-mlogit GPL-2 R-mvtnorm GPL-2 R-oz GPL (>= 2) R-PBSmapping GPL (>= 2) R-plm GPL-2 R-pscl GPL-2 R-quadprog GPL (>= 2) R-quantreg GPL-2 R-Rglpk GPL-2 R-RMySQL GPL (>= 2) R-robustbase GPL-2 R-Rsymphony GPL-2 R-RUnit GPL (...
2008 Jun 08
2
optim, constrOptim: setting some parameters equal to each other
Hello, and apologies for the upcoming naive questions. I am a biologist who is trying to teach himself the appropriate areas of math and stats. I welcome pointers to suggested background reading just as much as I do direct answers to my question. Let's say I have a function F() that takes variables (a,b,c,a1,b1,c1) and returns x, and I want to find the values of these variables that result in
2020 Oct 08
0
unable to access index for repository...
Don't choose a mirror. That will override the repos choice. Do update R to a current version if you aren't able to debug this yourself. Duncan Murdoch On 08/10/2020 12:38 p.m., Steven Yen wrote: > Sorry Gentlemen and all. Now this is becoming a joke (to me). I repeated > what I did earlier, with and without the option to set repos suggested > by Duncan. Now it does