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Seth DeLand

Last seen: 2 dagar ago Active since 2011

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  • MATLAB Mini Hack Participant
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  • 6 Month Streak
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Answered
Optimizing FLC with GA
Hi Michael, Here's an <http://www.mathworks.com/help/gads/examples/coding-and-minimizing-a-fitness-function-using-the-genetic...

ungefär 8 år ago | 0

Answered
how can i solved mixed integer linear programming using genetic algorithm in matlab
If your objective function and constraints are linear, I highly recommend using the mixed-integer linear programming solver in O...

mer än 8 år ago | 0

Answered
how to implement MILP in matlab
As of R2014a, Optimization Toolbox has a mixed-integer linear programming solver: <http://www.mathworks.com/help/optim/ug/intli...

mer än 8 år ago | 0

| accepted

Answered
Numerical packing
Seeing how Optimization Toolbox has a mixed-integer solver in R2014a, I figured I would post this alternate solution that uses <...

mer än 8 år ago | 3

Answered
simultaneous linear equations minimization by linprog command
The summation of the variables being equal to a constant could be taken care of by an equality constraint. In that case, your A...

mer än 8 år ago | 0

Answered
I'm trying to write a bit of user friendly code where the user is prompted to enter file names and the names will be stored in an array. However, I keep getting errors. Can someone fix this code below?
Two things that I think will help: 1) Use a cell array to store the names of the files rather than an array. This will be ea...

ungefär 9 år ago | 0

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Answered
How do I find all the positive roots of (e^(-.2x ))(cos(2x))-.15x^2+1
2 things: 1) fzero is designed to find a single zero at a time. You will need to loop through each value for x0 and record the ...

mer än 9 år ago | 0

Answered
Genetic Algorithm - Plotting fitness values
PlotFcns needs to be passed in as an option for ga: problem.options.PlotFcns = @gaplotbestf;

mer än 9 år ago | 1

| accepted

Answered
export m-file with fmincon to C-Code for PowerPC
Hi Daniel, Generating C-Code from MATLAB code that includes optimization solvers such as fmincon is currently not supported. ...

mer än 9 år ago | 0

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Answered
Nonlinear fit to multiple data sets with shared parameters
So if I understand correctly, you want to fit tau1, tau2, tau3 to all the data, but the other parameters are fit on an individua...

nästan 10 år ago | 0

Answered
Plotyy - Managing the colors of y-labels
For (1) you can set the YColor property of each of the axes, for example: set(AX(1),'YColor','k'); For (2), if you just ...

nästan 10 år ago | 1

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Answered
Solve Non Linear Equations using fsolve
From what I can tell this problem has 1600 equations and only 4 unknowns, which would mean it is overdetermined and likely doesn...

ungefär 10 år ago | 1

Answered
how can I change symbols in symbolic equations with x(1), x(2), ...
I believe the _matlabFunction_ function is what you are looking for: <http://www.mathworks.com/help/toolbox/symbolic/matlabfu...

ungefär 10 år ago | 0

Answered
matlab2012a vs matlab20111b. Why does the latter produces an error message?
I think the cause here is that fminunc was updated in R2012a to attempt to recover when the objective function returns NaN or In...

ungefär 10 år ago | 2

| accepted

Answered
How to fit parameters in an m.file to a curve?
Take a look at lsqcurvefit from the Optimization Toolbox. <http://www.mathworks.com/help/toolbox/optim/ug/lsqcurvefit.html>...

ungefär 10 år ago | 0

| accepted

Answered
A very simple question for GA
It looks like there is an issue with the way your decision variables are defined. The input to the objective function (which is...

mer än 10 år ago | 0

| accepted

Answered
Genetic Algorithm - weights ensemble optimization
Hi Michiel, If you aren't 100% set on using a Genetic Algorithm, I recommend starting with a gradient-based optimization solver...

mer än 10 år ago | 0

Answered
Optimization in LinProg
Hi Meemai, The message "Optimization Terminated" means that the optimization completed as normal. If you look at the value o...

mer än 10 år ago | 2

| accepted

Answered
Optimization Toolbox - Choosing a Solver
Hi Norbert, Since your decision variable shift will need to be an integer (it's being used as an index), you would need to use ...

mer än 10 år ago | 1

Answered
matrix inside a matrix
The REPMAT and DIAG commands should be able to do what you need: A = repmat([3;4;5],5,1) B = diag(A,0) Check out the ...

mer än 10 år ago | 0

| accepted

Answered
Mixed integer optimisation with genetic algorithm problem
Hi Calen, The GA solver uses a penalty function when optimizing mixed-integer problems. The penalty function takes into accoun...

mer än 10 år ago | 0

Answered
How can I save the settings of fsolve in the optimization tool ?
You can create an options structure in your MATLAB function and then pass that structure to FSOLVE. The options structure is cre...

mer än 10 år ago | 1

| accepted

Answered
OUT OF MEMORY
This looks like it might help: <http://www.mathworks.com/products/image/description7.html>

mer än 10 år ago | 1

| accepted

Answered
Optimization Technique
If you're trying to minimize or maximize Y, and Y is a scalar, I'd recommend trying <http://www.mathworks.com/help/toolbox/optim...

mer än 10 år ago | 0

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Answered
Lsqcurvefit on function depending on syms
Hi Gustav, You'll first need to use the matlabFunction command to convert the symbolic equation into a MATLAB function handle...

mer än 10 år ago | 0

| accepted

Answered
Solving overdeterminated linear equation system with specified conditions
Hi Thomas, If you have the Optimization Toolbox, LSQLIN can solve constrained least-squares problems: <http://www.mathworks.com...

mer än 10 år ago | 1

| accepted

Answered
Optimization: share additional output of cost function with constraint function
There was a good discussion on this issue here: <http://www.mathworks.com/matlabcentral/newsreader/view_thread/269936> The te...

mer än 10 år ago | 1

| accepted

Answered
How to use the OutputFcns function in the optimset options?
<http://www.mathworks.com/help/techdoc/math/bsgpq6p-23.html>

mer än 10 år ago | 0

Answered
For LSQNONLIN is it okay if the number of elements in the vector-valued function varies per iteration?
Hi Kevin, LSQNONLIN is using the values in the Fopt vector to determine the gradient, and it does this by calculating Fopt at...

mer än 10 år ago | 2

| accepted

Answered
GA optimization
Use GAOPTIMSET: <http://www.mathworks.com/products/global-optimization/demos.html?file=/products/demos/shipping/globaloptim/ga...

mer än 10 år ago | 0

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