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Generating iterations from Genetic Alogrithim
Do you have the Global Optimization Toolbox? That's the first step if you want to use GA. See this about GA: <http://www.mat...

9년 이하 전 | 0

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Problem with subfunction within lsqnonlin??
All values returned to lsqnonlin must be of data type double.

약 9년 전 | 0

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PCA by optimization
Hi MJ, Optimization toolbox functions will minimize over "X" where X can be a matrix or vector. Internally, matrices get flat...

9년 이상 전 | 0

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Fixed Charge Network Flow Model Problem
Here's a basic LP example that shows how to use linprog (the LP solver in Optimization Toolbox): http://www.mathworks.com/help/...

9년 이상 전 | 0

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UPDATING Upper and Lower Bounds in MultiStart Optimization
It seems like you want to solve several different problems. Each time you change the bounds, the optimization problem is differe...

9년 이상 전 | 0

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problem with fsolve - unpredictable results with long data vectors
I'm not sure what exactly is going on here. Fsolve seems to be finding a solution in both cases, correct? Since the system is sq...

9년 이상 전 | 0

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blackbox function
Just to close the thread, the answer is given by Alan and others here: http://www.mathworks.com/matlabcentral/newsreader/view...

9년 이상 전 | 0

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optimization problem solution: [500x12000].X = [500x1] ??
Here's a suggestion I posted over at the newsgroup: The default algorithms for both lsqlin and quadprog accept sparse matrice...

9년 이상 전 | 0

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Quadratic optimization with quadratic constraints
Hi Rene (sorry, can't get the accent right) You can use FMINCON to solve this problem. However, there is no dedicated input f...

9년 이상 전 | 0

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fmincon not optimizing over one variable
It may appear to fmincon that the function has a zero derivative with respect to the variable in question. How sensitive is your...

9년 이상 전 | 1

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Quadprog - dependent rows in constraint matrix
Is A for your inequality constraints or equality constraints? Also, it may depend on the algorithm. If you have redundant ine...

10년 이하 전 | 0

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Lower and Upper bounds in LSQNONLIN
The start point is one of a few things you can change to influence the solver. There are other options (tolerances, etc) that ma...

10년 이하 전 | 0

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option to stop lsqnonlin when residual norm value reached
Hi Tony, There are no tolerances to stop lsqnonlin when the residual norm crosses a threshold. What you can do instead is set...

약 10년 전 | 2

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Slacktol value ?
If anyone else checks this, know that the problem given above is infeasible and the solution is erroneous. It's not recommen...

약 10년 전 | 0

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Interior-point in fmincon without inequality constraints
You're correct, without inequalities, the interior point algorithm is a fairly straightforward algorithm. In the case where your...

약 10년 전 | 0

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Unconstrained Optimization with Additional Parameters
We've yet to see your code for the analytical gradient calculation (hopefully we don't ;) ). I suspect that the error might be t...

약 10년 전 | 0

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Optimization with a vector of penalty functions
Hi Oliver, I think that fmincon is struggling with this for two reasons. fmincon is meant to work on smooth-continuous proble...

약 10년 전 | 0

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Strict inequalities in fmincon
Effectively, you're defining a new strict inequality A*x <= b-e where "e" can be arbitrarily small. As the cyclist pointed out, ...

약 10년 전 | 0

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lsqnonlin - output value at each iteration?
I'm not sure what you mean by "value of each iteration". The parameter values? The value of your system (F(x))? Either way, l...

약 10년 전 | 1

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How to solve coupled optimization problem in MATLAB?
I think that you want to use lsqnonlin or lsqcurvefit to solve your problem. They are built to handle problems of the form: min...

10년 이상 전 | 0

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using fsolve for real answers
fsolve (and all other functions in the Optimization Toolbox) are not supposed to work with complex data. You need to make sure t...

10년 이상 전 | 0

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Nonlinear least square minimization
Your answer looks ok. lsqnonlin is a good choice. You could also look at lsqcurvefit: http://www.mathworks.com/help/toolbox/o...

10년 이상 전 | 0

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supplied Hessian of fmincon
As you stated, fmincon provides a BFGS approximation to the Hessian of the Lagrangian. However, the BFGS matrix is a positive de...

10년 이상 전 | 2

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fminunc works, fmincon does not
Hi Kasper, It's hard to tell what's going on from the code, so I'll just offer some generalities. Each solver and algorith...

10년 이상 전 | 0