R help - Jan 2012 - discrete simulated annealing

Dear All,

I need to use simulated annealing for optimization
is there a way to limit the search place to only discrete values? And 
also exclude certain solutions, e.g. exclude the solutions when all the 
variables are the same?

many thanks

Yan

On Mon, Jan 30, 2012 at 04:57:36PM +0000, yan jiao
wrote:
> Dear All,
> 
> I need to use simulated annealing for optimization
> is there a way to limit the search place to only discrete values? And 
> also exclude certain solutions, e.g. exclude the solutions when all the 
> variables are the same?
Dear Yan:

The page ?optim says

  If a function to generate a new candidate point is given,
  method ?"SANN"? can also be used to solve combinatorial
  optimization problems.

If you have your specific function to generate a new point,
this function may apply the required restrictions.

Hope this helps.

Petr Savicky.