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Seth DeLand

MathWorks

Last seen: 5 days ago Active since 2011

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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...

7 years 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...

7 years 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...

7 years ago | 0

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

7 years 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...

7 years 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...

8 years 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 ...

8 years ago | 0

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

8 years ago | 1

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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. ...

8 years 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...

9 years 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 ...

9 years 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...

9 years 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...

9 years 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...

9 years ago | 2

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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>...

9 years ago | 0

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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...

9 years ago | 0

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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...

9 years 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...

9 years ago | 2

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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 ...

9 years 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 ...

9 years ago | 0

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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...

9 years 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...

9 years ago | 1

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

9 years ago | 1

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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...

9 years 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...

9 years ago | 0

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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...

9 years ago | 1

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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...

9 years ago | 1

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

9 years 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...

9 years ago | 2

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

9 years ago | 0

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