[R] optim with simulated annealing SANN for combinatorial optimization

2011-12-16 Thread John C Nash
with many tools in this domain, for effective use they require more knowledge than many of their users possess, and can be dangerous because they seem to "work". JN > Message: 72 > Date: Fri, 16 Dec 2011 18:41:12 +1100 > From: Dae-Jin Lee > To: r-help@r-project.o

[R] optim with simulated annealing SANN for combinatorial optimization

2011-12-15 Thread Dae-Jin Lee
Hi all I am trying to solve a combinatorial optimization problem. Basically, I can reduce my problem into the next problem: 1.- Given a NxN grid of points, with some values in each cell 2.- Find the combination of K points on the grid such that, the maximum mean value is obtained I took the Tr