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Auto differentiation vs finite differences in optimization toolbox
Yes, finite differences can be faster than AD. Typically, this occurs in situations like yours where the function or functions a...

3 years ago | 0

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How optimize multiple responses of dataset ?
I think that you probably want to fit a function to the data, where the function represents the response. Obviously your data do...

3 years ago | 0

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How to use fmincon as fminbd with two different variables
I think that you need to understand that fmincon minimizes a function of a single argument, usually called x. The x argument can...

3 years ago | 1

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Maximum Diversified Porfolio (MDP) fmincon optimization problem doesn't work
You say that x is 12-by-1, yet you write x0 as 1-by-12. That could be the problem. Try x0 = zeros(n_asset,1); % Now x0 is 12-by...

3 years ago | 0

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How to prevent fmincon from immediately going to the lower bound of time in a minimum time problem?
I am not sure that I understand exactly what is happening. But it sounds to me as if the nonlinear constraints are not being sat...

3 years ago | 0

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how to make nelder mead trajectory gif on matlab
This example might help. Make sure you click the "Open in MATLAB" button to be able to access all the code. Alan Weiss MATLAB ...

3 years ago | 0

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How to do optimization?
I am not 100% sure that I understand you, because you have two different definitions of Fr, namely Fr = 0.5: 0.1: 0.9; Fr = m*...

3 years ago | 0

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How to follow the progress of fminunc
See the Plot Functions topic. Alan Weiss MATLAB mathematical toolbox documentation

3 years ago | 0

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Way to overcome tolerance limit restriction, without change in initial value in fsolve function OR any other way out.
I'm not sure what you are trying to do, because apparently the initial point is a solution. But if you want fsolve to take a fut...

3 years ago | 0

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Performance of Mixed-integer linear programming (MILP) with intlinprog
MILP is a notoriously difficult problem type. For suggestions, see Tuning Integer Linear Programming. Alan Weiss MATLAB mathem...

3 years ago | 1

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Assigning different upper and lower bounds to function input variables when calling the function during optimization
You need to write your function of one variable, say x = [x1,x2,x3,x4,x5]. For example, function RMSE = energy_demand(x) % Here...

3 years ago | 0

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What acquisition function should I use in Bayes Optimization?
For information about acquisition functions, see Acquisiton Function Types. Alan Weiss MATLAB mathematical toolbox documentati...

3 years ago | 1

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How do I solve two ode (dct/dt and dR/dt) simultaneously with ODE45 and optimize two parameters using global optimization ?
For a relevant example, see Optimize an ODE in Parallel. Alan Weiss MATLAB mathematical toolbox documentation

3 years ago | 0

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Need some help about optimization with matlab and simulink.
For a relevant example, see lsqnonlin with a Simulink® Model. Alan Weiss MATLAB mathematical toolbox documentation

3 years ago | 0

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difference between Optimization terminated: maximum number of generations exceeded and Optimization terminated: average change in the fitness value less than .
1 means that the process has stalled, and whether this is good or bad depends on what you want. If the stall window is large, th...

3 years ago | 0

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Problem-Based Optimization, No feasible solution found
Your problem is infeasible as given. Using the routines in Investigate Linear Infeasibilities, I found the following. Convert th...

3 years ago | 1

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Input user data into Surrogate Optimization Function
To pass extra parameters see Passing Extra Parameters. Alan Weiss MATLAB mathematical toolbox documentation

3 years ago | 0

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How to set a boundary condition to my solution of the fitness function? (MATLAB genetic algorithm)
I believe that your optimization will work much better using patternsearch as the solver instead of ga, or even using surrogateo...

3 years ago | 1

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Can you help me with the output of my optimizer?
Use this example as a guide: Example of a Nested Output Function. Alan Weiss MATLAB mathematical toolbox documentation

3 years ago | 0

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fmincon options settings mrsgarch
Here are some options you can try (some of your values do not make sense, such as having MaxIter be greater than MaxFunEvals, or...

3 years ago | 0

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How exactly is the merit function weight 'w' cycled in the surrogateopt function algorithm?
Each sample point uses one weight (one merit function at any one time). The weights cycle after every new point is generated. A...

3 years ago | 0

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Why do I receive local exitflag -10 when I am using multistart?
The MultiStart run exit flags are described here. You see that –10 means the initial points that MultiStart tried all led to Inf...

3 years ago | 0

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Incorrectly reported Func-count in lsqcurvefit. Also, MaxIterations not obeyed
Thank you for reporting this odd behavior, Matt. I investigated and found that an internal check for stopping in the nonlinear l...

3 years ago | 1

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Change axis of fcontour plot
The function reference page for fcontour shows at least two ways of choosing the contour lines: Use the LevelList name-value ar...

3 years ago | 1

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Nonlinear Optimization with 2 Variables, 1 variable is always equal limit
Your problem has costs in terms of the problem variables of the form cost = days*welders*positive + days*positive2; Here posit...

3 years ago | 0

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In Matlab 2019, 2020, or 2021, can parallel computing be used with intlinprog?
No, there is no provision for parallel computation in intlinprog. You can always check the Release Notes to find what has change...

3 years ago | 0

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How to formulate nonlinear optimization problem with large number of variables and constraints
It sounds to me as if you want to fit an expression to data, possibly in a least-squares sense. For examples and details, see No...

3 years ago | 0

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FMINCON with multiple constraints
I think that your fracturade function is returning data type SINGLE. Perhaps the quickest fix is to include the following call j...

3 years ago | 0

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Function evaluations (F-count) in fmincon
Please see the documentation on Iterations and Function Counds. To quote the relevant paragraph: If the problem has constraints...

3 years ago | 0

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MultiStart runs less than specified number of runs
This can happen when the StartPointsToRun property in ms is not 'all'. In that case, many start points can be skipped in a run b...

3 years ago | 1

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