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why using pattrensearch with genetic algorithm gives error while fminunc not
Currently, you cannot use |optimoptions| to set options for |patternsearch|. Use <http://www.mathworks.com/help/gads/psoptimset....

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Portfolio cardinality constraint in a genetic algorithm
Well, not in a genetic algorithm, but you might find <http://www.mathworks.com/help/optim/examples/mixed-integer-quadratic-progr...

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How could I write this equation in matlab?
This looks like a <http://www.mathworks.com/help/optim/linear-programming-and-mixed-integer-linear-programming.html Mixed-Intege...

casi 11 años hace | 0

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Undefined function or variable 'createPDEResults'
<http://www.mathworks.com/help/pde/release-notes.html As the release notes state>, |createPDEResults| was introduced in R2015b, ...

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Lsqnonlin with nonlinear constraint!
It seems to me that you have a nonlinear constraint with a sum of squares problem. If you examine the <http://www.mathworks.com/...

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equivalent of fsolve in MATLAB
It depends on how many variables you have. If you have one unknown in a nonlinear function, you can use <http://www.mathworks.co...

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optimization using matlab (Binary integer programming )
If you have Optimization Toolbox, you can use the <http://www.mathworks.com/help/optim/ug/intlinprog.html intlinprog> function t...

casi 11 años hace | 0

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Vectorized fitness function for ga
It is difficult to look at your code and figure out what you are trying to do. In "code 1" you have the line tempvariables(i...

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Sparsity pattern of Jacobian for fmincon
The |fmincon 'trust-region-reflective'| algorithm accepts a |HessPattern| option, but requires you to give an analytic gradient ...

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How to define FMINCON Step size ?
<http://www.mathworks.com/help/optim/ug/choosing-a-solver.html#brhkghv-19 As the documentation states>, all Optimization Toolbox...

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How can i plot a graph of one of the parameters vs no. of iterations in Genetic algorithm optimization technique??
Use a <http://www.mathworks.com/help/gads/genetic-algorithm-options.html#f14474 plot function>. If none of the built-in function...

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Stop Figures Window on the progress of Global Optimization Toolbox from maximizing itself
Thank you for reporting this undesirable behavior. The development team will investigate fixing it in a future release. Meant...

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What initial handle(s) do I use to correctly solve the Heat/Diffusion PDE?
In 2-D geometry, if you have PDE Toolbox, you can use the |parabolic| solver. For examples, see <http://www.mathworks.com/help/p...

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I need some help in Genetic Algorithm Optimization... I have a fully functional code... i need to run GA for three parameters there and maximize one result... i need an example for three parameters... an example would help me a lot!!! can anyone help
<http://www.mathworks.com/help/gads/constrained-minimization-using-ga.html The documentation> has examples, such as this one wit...

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Coefficients for 2D PDE: Can you have a coefficient that is f(x(t),y(t),t) ?
As far as I know, PDE Toolbox assumes that the geometry of the problem is fixed for all time. However, it might be possible to f...

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How to increase initial step size in optimization toolbox?
<http://www.mathworks.com/help/optim/ug/optimizing-a-simulation-or-ordinary-differential-equation.html As the documentation desc...

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fmincon Current Step Size
It sounds to me as if the scaling of your problem is an issue, with these huge |x| values and tiny derivative values. Is it poss...

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refine mesh in PDEModel
You cannot refine a mesh using a PDEModel. You have to import the geometry (I assume that you did that before trying to create a...

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how can i solve an optimization problem which has two constraints and five unknons?
This sounds like a job for <http://www.mathworks.com/help/optim/ug/fmincon.html fmincon>. You might find <http://www.mathworks.c...

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use cplex for mixed integer problem but get non-integer output
Nearly any MILP solver uses floating point arithmetic internally, and uses tolerances to decide whether a number is "integer eno...

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How can I optimize this problem to find the most suitable set of variables to maximize the cost function ?
You seem to have four variables. Your upper and lower bounds have four components each. |A| has four components. Yet you write |...

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Is there any function named pdeRegionCalc in pde toolbox?
I wonder if perhaps your installation somehow got corrupted. Try rehash toolboxcache If that doesn't work, then maybe rei...

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The c coefficient for assempde found in a matrix of x,y values.
Well, you don't have |c| values for *every* point in the plate, just some finite subset, or possibly the values are constant ove...

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Set Neumann Boundary Conditions to PDEModel
<http://www.mathworks.com/help/pde/ug/nonconstant-boundary-object-specification.html The documentation> describes how to set bou...

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how to calculate fitness function when simulation is running?
I have trouble understanding what you are doing. What are your control variables? I mean, which variables should the genetic alg...

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pdegplot without subdomain edges and labels?
After you create your geometry, use <http://www.mathworks.com/help/pde/ug/csgdel.html csgdel> to delete subdomain boundaries. Th...

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Solution very sensitive to initial guess?
I am not sure that this will help, but I can suggest two things that have a chance of improving things for you: # Use |lsqnon...

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I am attempting to implement the fminunc (unconstrained Problem) function in MATLAB. I am getting an error with my code.
Your code does not make much sense to me for the following reasons: * x1 and x2 are scalars. So what do you expect n to be? ...

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Exporting PDE toolbox solutions
With R2014b or later, <http://www.mathworks.com/help/pde/ug/evaluate.html#buiw7fa you can interpolate the solution to a grid bef...

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User defined optimization solver options
This isn't really an optimization question, but a programming question. I am not an expert programmer. But I'll tell you wat I t...

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