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Hi, I am solving an optimization problem using fmincon with the interior-point method. The problem has about 5000 variables a...

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Asked 3 years ago

Matlab interface to a LBFGS-code for solving unconstrained minimization problems.

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4 years ago

Thanks! I guess that's a rather subtle error that could have caused me quite a bit of frustration...

2546 views

Posted 6 years ago

Ok, I added the line before reallocating Pr and Ir. It works fine now, although it seem a little odd to me. Thanks again for y...

Thanks for your reply. Actually, in the case nnz = 0, I haven't touched the jc array, it's simply an array of zeros of size [num...

Hello! I'm trying to assemble and return a sparse matrix in a mex-function. At the end of the function, I try to correct for th...

Thanks for the tip! Actually, I am thinking, by looking at the suggested literature for the IP solver, that in the abscense of i...

2517 views

Responded 6 years ago

Hello! I have a rather large-scale nonlinear optimization problem with nonlinear equality constraints. I looked trough the docu...

Yes it must get smaller if by minimized you mean finding the global minima, otherwise I'd say that the enlarged feasible set onl...

2375 views

Responded 4 years ago

Ok, I was also somewhat surprised at first. Why do you say "must"? I should perhaps also add that there might not exist any po...

Hi! I'm trying to solve a problem of the form "min f(x)", where x is an n-vector and f is a non-convex function, using fmincon ...

Posted 4 years ago

If anyones interested it turned out that the problem was not in the code that I posted, but elsewhere when creating the dof arra...

1725 views

Hello! I have a problem trying to implement a mex function (attached the below). The purpose of the function is to assemble a ...

Thanks for your reply! If anyone's interested, here's another solution based on using persistent variables (the problem is just ...

1411 views

Actually this is the standard approach in structural optimization (S0), which is what I'm considering. The displacements, or any...

Thanks for the reply! Interesting idea, I will look into it. By the way, is there a particular reason why the developers have ch...

Hello! I am planning on using fmincon for solving constrainted nonlinear optimization problem. The problem involves solving a ...

Hello! Inspired by the submission http://www.mathworks.com/matlabcentral/fileexchange/21233-mex-multithreading I started to exp...

1214 views

Posted 5 years ago

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