[R] optimize integer function parameters

[Christof Kluß]

Hi

I have "observations" obs <- (11455, 11536, 11582, 11825, 11900,  ...)

and a simulation function f(A,B,C,D,E,F), so sim <- f(A,B,C,D,E,F)

e.g. sim = c(11464, 11554, 11603, 11831, 11907, ...)

now I would like to fit A,B,C,D,E,F such that "obs" and f(A,B,C,D,E,F) 
match as well as possible. A,..,F should be integers and have bounds.

How would you solve this problem without bruteforce in an acceptable time?

thx
Christof