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How to find the minimum of the given function?
Do you have Optimization Toolbox™? If so, I suggest that fminunc might be an appropriate solver. Otherwise, I suggest fminsearch...

3ヶ月 前 | 0

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Trying to plot results from fmincon
I think that you want your horizontal axis to be the iteration number and your vertical axis to be the x(1) or x(2) value. This...

3ヶ月 前 | 0

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Local minima possible. lsqnonlin stopped because the size of the current step is less than the selected value of the step size tolerance.
Perhaps this old example will be helpful. But maybe it is better to use nlparci from Statistics and Machine Learning Toolbox™. ...

3ヶ月 前 | 0

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Local minima possible. lsqnonlin stopped because the size of the current step is less than the selected value of the step size tolerance.
Take a look at some suggestions in When the Solver Might Have Succeeded and When the Solver Succeeds. Alan Weiss MATLAB mathem...

3ヶ月 前 | 1

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Different Bayes Optimization Results
Sorry, it is not clearly documented, but when running Bayesian optimization in parallel, results are not reproducible. You can s...

4ヶ月 前 | 2

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lsqnonlin with matrices Problem to define the function
As clearly stated in the documentation, "...an objective function ... accepts one input, say x." One input, not a1,a2,a3,a4,b1,b...

4ヶ月 前 | 1

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Constraints on a set of parameter in the likelihood function with fmincon
I don't understand whether you are optimizing over x, over theta, or over both. If theta is fixed and you are optimizing over x,...

4ヶ月 前 | 0

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Minimising a matrix function subject to an equality constraint
This looks like a job for fmincon. Your unknown values are the upper (say) triangular elements in y. Create f to handle the up...

4ヶ月 前 | 0

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Parameter Estimation for a System of Differential Equations and DAEs
It is possible that the results are too noisy for direct estimation by lsqcurvefit, which is a derivative-based solver. I have t...

4ヶ月 前 | 0

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laplace equation on a trapezoidal domain
If you have PDE Toolbox, you can easily define this problem using either PDE Modeler app or the command-line method. If you don...

4ヶ月 前 | 1

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Optimization Problem about Optimal Portfolio with Aversion Index
I don't see your rho and sigma variables, but you could try sumexpr = optimexpr; for i = 1:n for j = 1:n sumexpr...

4ヶ月 前 | 0

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Solving PDEs: time dependent c coefficient
If I understand you correctly, you have a sequence of independent problems; the solution at one time t does not depend on or inf...

4ヶ月 前 | 0

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LSQCURVEFIT Error When Trying To Optimize Parameters
I think that you probably made a gross modeling error, because your predicted function is the same as predicted = @(c,xdata) c(...

4ヶ月 前 | 0

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How do I fix this?
You probably need to write min = fminsearch(@calc, in0); % Note the @ symbol Alan Weiss MATLAB mathematical toolbox documenta...

4ヶ月 前 | 0

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Using a Optimization Variable for an If Statement
Generally, you have to encode these kinds of if-then switches using a more complex, but still linear, MILP set of variables. For...

4ヶ月 前 | 0

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fmincon ignoring lower function value during convergence
Notice that the feasibility of the iteration you like is about 2e-3, meaning the constraints are not met at that point. fmincon ...

4ヶ月 前 | 2

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symbolic input error in fzero function
Your objective function must accept a single scalar argument, not four arguments as you have specified. Perhaps what you want i...

4ヶ月 前 | 0

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How to replace an array of symbolic variable in optimization problem?
I do not understand what you are asking. But perhaps these examples will allow you to help yourself in using symbolic math with ...

4ヶ月 前 | 0

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What functions are valid for optimization expressions?
I'm sorry that you couldn't find this information in the documentation. Supported Operations o Optimization Variables and Expres...

4ヶ月 前 | 1

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Why 'OptimizeHyperparameters' in fitcknn doesn't provide the 3D plot as it says in the documentation?
Thanks for the information. As stated in the HyperparameterOptimizationOptions reference section, ".... If [you set the option t...

4ヶ月 前 | 1

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Please advise - Error 'constraints' Too many output arguments
Do not give bounds and linear inequality constraints as a nonlinear constraint function. Your first two nonlinear constraints sh...

4ヶ月 前 | 0

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Fzero, Function value at starting guess must be finite and real
According to the documentation, the fun argument of integral "must accept a vector argument, x, and return a vector result, y." ...

4ヶ月 前 | 0

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How to Replace Equation Inside a For Loop?
if t <= 65 % Assume t is your integration variable % Your code here else % Different code here end Alan Weiss MATL...

4ヶ月 前 | 1

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preference of fmincon than other methods
fmincon uses standard algorithms. You can find references to the algorithms in the Constrained Nonlinear Optimization Algorithms...

4ヶ月 前 | 0

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Multivariable Optimization problem with MATLAB
I don't understand what you are trying to do exactly. But for troubleshooting, you need to ensure that the function handle that ...

4ヶ月 前 | 0

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Understanding bayesopt: 1: Why is the same point tested more than once? 2: Understanding acquisition function
If your objective function is smooth, then you should use fmincon as your optimizer, starting from a variety of initial points t...

4ヶ月 前 | 0

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Why does the rowsize of A matter in fmincon
You should not use all-zero rows in A or Aeq. Each such row specifies a linear constraint that does not, in fact, exist. fmincon...

4ヶ月 前 | 1

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How to tune fmincon approximate gradient estimation in sqp algorithm
See, for example, the descriptions of FiniteDifferenceStepSize and FiniteDifferenceType in fmincon options. Alan Weiss MATLAB ...

4ヶ月 前 | 0

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linprog() with many constraints
Did you try constr = (Pcap_w+Kw)*Ppu_w + Pcap_s*Ppu_s + Pcap_t*Ppu_t >= demand; prob.Constraints.constr = constr; Alan Weiss ...

4ヶ月 前 | 0

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How can I improve accuracy using PDE Toolbox
If your toolbox version were R2017a or earlier, the default mesh for 2-D geometry has linear elements. You can get improved accu...

5ヶ月 前 | 0

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