Optimisation problem for bivariate functions

2 次查看(过去 30 天)
Hi, I have the following equation:
f(z)=g(z)+b*u(z)
where z=(x,y) i.e. bivariate,b is a parameter, u(z) the uniform distribution and g(z) a function that represents distance.
By considering for a momment b=0, min(f(z)) can give me the location of the minimum distance. However because I want to have locations that are not the same I add u(z). With b it's possible to change the influence of u(z). Very high values of b give very random positions, while if b is very small, only locations around the minimum are chosen.
Furthermore, I have some reference locations zr={(x1,y1),(x2,x2),...(xn,yn)}. I'm trying to figure out the best b I could have in order to produce from f(z) locations as much close as possible to zr.
Is there anything in matlab for optimisation problems or any methods I could use?
Thanks

回答(1 个)

Alan Weiss
Alan Weiss 2015-6-8
fminsearch solves multivariable minimization problems. Also, if you have a license for it, Optimization Toolbox solves such problems more efficiently.
You might want to look at Curve Fitting Via Optimization to get some ideas how you might use fminsearch to help you.
Alan Weiss
MATLAB mathematical toolbox documentation

类别

Help CenterFile Exchange 中查找有关 Solver Outputs and Iterative Display 的更多信息

标签

产品

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by