I would like to find the minimum of an objective function which has 43 variables and takes around 20 seconds to evaluate (another minimization problem needs to be solved for this objective function, explaining why it takes so long). It is not immensely important to me that I get the best, most accurate answer – only that I can find some sort of minimum reasonably quickly. So, I am looking for help in doing this.
So far, I have attempted to increase the DiffMinChange value, but fmincon seems to be ignoring this. I am also using the "active-set algorithm", because I read somewhere this was the most efficient of the four options. I do have a nonlinear constraint function, and upper and lower bounds.
Any help with this would be greatly appreciated – thanks! Danny
Best Answer