On Mon, 3 Oct 2005, Huntsinger, Reid wrote: > Have you looked at the R interface to GLPK (the GNU Linear Programming Kit)? > http://cran.r-project.org/src/contrib/Descriptions/glpk.html
NUOPT is not just about LP: the subject was `language for optimization'. Its manual says `NUOPT is a collection of powerful optimization methods, including: - primal-dual interior point method with higher order correction for Linear Programming (LP) models. - simplex method for Linear Programming (LP) and mixed integer programming (MILP) models. - primal-dual interior point method based on line search for general Convex Programming (CP) models including convex Quadratic Programming (CQP) models. - primal-dual interior point method based on trust region method for general Non-Linear Programming (NLP) models. - primal-dual interior point method based on quasi-Newton method for general Non-Linear Programming (NLP) models. - active set method for convex Quadratic Programming (CQP) models and mixed integer Quadratic Programming(MIQP) models.' In any case, I don't see GLPK as a `language' and other LP solvers are available in R. > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Prof Brian Ripley > Sent: Sunday, October 02, 2005 10:38 AM > To: Paolo Cavatore > Cc: [email protected] > Subject: Re: [R] modeling language for optimization problems > > > On Sun, 2 Oct 2005, Paolo Cavatore wrote: > >> Does anyone know whether R has its own modeling language for optimization >> problems (like SIMPLE in NuOPT for S-plus)? > > No. Note that SIMPLE is the language of NUOPT, not of S-PLUS. There is > an (extra-cost) interface module S+NUOPT, but it is an interface to > NUOPT's engine. > > As far as I am aware R itself covers almost none of the ground of S+NUOPT, > and available packages cover only a small part of it. -- Brian D. Ripley, [EMAIL PROTECTED] Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595 ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
