search for: grg2

Displaying 2 results from an estimated 2 matches for "grg2".

Did you mean: arg2
2009 Sep 03
3
Rdonlp2 package question
...donlp2/, but now that is missing also. I sent an email to the author but received no response. Are there any alternatives for constrained nonlinear programming problems among the active packages? I need something that will solve the same kinds of problems that, say, Excel Solver will do using the grg2 algorithm (or something similar). Thanks Richard Valliant
2003 Jul 15
7
Excel can do what R can't?????
Hi there I thought this would be of particular interest to people using 'optim' functions and perhaps people involved with R development. I've been beaten down by R trying to get it to perform an optimization on a mass-balance model. I've written the same program in excel, and using the 'solver' function, it comes up with an answer for my variables (p, ACT, which