Answered

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...

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...

2 months ago | 0

Answered

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...

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...

2 months ago | 0

| accepted

Answered

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...

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...

2 months ago | 0

Answered

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...

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...

2 months ago | 0

| accepted

Answered

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...

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...

2 months ago | 0

| accepted

Answered

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...

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...

2 months ago | 1

| accepted

Answered

Problems using function fsolve

Check the suggestions in fsolve Could Not Solve Equation. Alan Weiss MATLAB mathematical toolbox documentation

Problems using function fsolve

Check the suggestions in fsolve Could Not Solve Equation. Alan Weiss MATLAB mathematical toolbox documentation

2 months ago | 0

Answered

4 variables problem optimization with Genetic Algorithm

ga is a stochastic algorithm, and is expected to give different results on different runs. You can get reproducible behavior by ...

4 variables problem optimization with Genetic Algorithm

ga is a stochastic algorithm, and is expected to give different results on different runs. You can get reproducible behavior by ...

2 months ago | 1

| accepted

Answered

Lsqnonlin optimization unexpected behavior

lsqnonlin is a gradient-based solver. It first attempts to estimate the local gradient by small finite difference steps. If your...

Lsqnonlin optimization unexpected behavior

lsqnonlin is a gradient-based solver. It first attempts to estimate the local gradient by small finite difference steps. If your...

2 months ago | 0

Answered

Which optimization tool should I use for my case?

I'm not sure that I understand what you are doing, but I think that you could use the fminbnd solver along with some interpolati...

Which optimization tool should I use for my case?

I'm not sure that I understand what you are doing, but I think that you could use the fminbnd solver along with some interpolati...

3 months ago | 0

| accepted

Answered

How to increase accuracy of optimization using genetic algorithm of the following code? Value obtained by ga = -2360 (approx.) and Actual value is = -2390. Percentage of accuracy by ga = 98.7%

You are getting a pretty good answer from the wrong solver. Your objective and constraints are all smooth, so you should not be ...

How to increase accuracy of optimization using genetic algorithm of the following code? Value obtained by ga = -2360 (approx.) and Actual value is = -2390. Percentage of accuracy by ga = 98.7%

You are getting a pretty good answer from the wrong solver. Your objective and constraints are all smooth, so you should not be ...

3 months ago | 0

| accepted

Answered

Multi objective Bayesopt in MATLAB

There is no provision for using bayesopt for multiobjective problems. You have several choices: Use bayesopt as the optimizer i...

Multi objective Bayesopt in MATLAB

There is no provision for using bayesopt for multiobjective problems. You have several choices: Use bayesopt as the optimizer i...

3 months ago | 0

Answered

Problem-Based Optimisation - "Linprog stopped because it exceeded its allocated memory"

Sorry, I do not know why the default algorithm gives this error. The 'interior-point' algorithm solves it easily. dt = 15/60; ...

Problem-Based Optimisation - "Linprog stopped because it exceeded its allocated memory"

Sorry, I do not know why the default algorithm gives this error. The 'interior-point' algorithm solves it easily. dt = 15/60; ...

3 months ago | 0

| accepted

Answered

How can I define fitness limit for multiple objectives when using gamultiobj

You can set Nonlinear Constraints in gamultiobj to keep the objective functions within the limits you like. Or you can simply po...

How can I define fitness limit for multiple objectives when using gamultiobj

You can set Nonlinear Constraints in gamultiobj to keep the objective functions within the limits you like. Or you can simply po...

3 months ago | 0

| accepted

Answered

What should be the optimization method for my case?

For such a general question I can give only general advice. See the topics Optimizing a Simulation or Ordinary Differential Equa...

What should be the optimization method for my case?

For such a general question I can give only general advice. See the topics Optimizing a Simulation or Ordinary Differential Equa...

3 months ago | 0

| accepted

Answered

How to define discrete variables in GA

Take a look at the Mixed Integer ga Optimization topic, and in particular the example Solving a Mixed Integer Engineering Design...

How to define discrete variables in GA

Take a look at the Mixed Integer ga Optimization topic, and in particular the example Solving a Mixed Integer Engineering Design...

3 months ago | 1

Answered

Finding solution for array that satisfies given constraints and gives desired output

I don't know if this is what you want, but the problem-based approach in Optimization Toolbox™ handles your equations easily. E...

Finding solution for array that satisfies given constraints and gives desired output

I don't know if this is what you want, but the problem-based approach in Optimization Toolbox™ handles your equations easily. E...

3 months ago | 0

| accepted

Answered

FMINCON is not providing feasible answers

Your nonlinear constraint functions all look linear to me. I suggest that you remove the nonlinear constraints from the problem ...

FMINCON is not providing feasible answers

Your nonlinear constraint functions all look linear to me. I suggest that you remove the nonlinear constraints from the problem ...

3 months ago | 0

Answered

Optimization problem with complex number in patternsearch command

Global Optimization Toolbox solvers such as patternsearch require real numbers only as control variables. It is fine to calculat...

Optimization problem with complex number in patternsearch command

Global Optimization Toolbox solvers such as patternsearch require real numbers only as control variables. It is fine to calculat...

3 months ago | 1

| accepted

Answered

Using fmincon with for loop

I think that you need to define nonlcon this way: nonlcon = @(x)myf(x, Ptloademod, Ptloadh,paramb,paramc,parama); Notice that ...

Using fmincon with for loop

I think that you need to define nonlcon this way: nonlcon = @(x)myf(x, Ptloademod, Ptloadh,paramb,paramc,parama); Notice that ...

3 months ago | 0

Answered

Why each time algorithm "interior point" is shown in output even if I use different algorithm?

You didn't pass the options to fmincon. [x,fval,exitflag,output]= fmincon(FUN,xo,[],[],[],[],[],[],[],OPTIONS); Alan Weiss MA...

Why each time algorithm "interior point" is shown in output even if I use different algorithm?

You didn't pass the options to fmincon. [x,fval,exitflag,output]= fmincon(FUN,xo,[],[],[],[],[],[],[],OPTIONS); Alan Weiss MA...

3 months ago | 0

| accepted

Answered

I think my PSO code is correct but I don’t know why I get this error? I am using this code for other problems it is working fine but on prinkinsons data it is showing error. Anybody who can help?

I suggest that you learn to use the debugger. Alan Weiss MATLAB mathematical toolbox documentation

I think my PSO code is correct but I don’t know why I get this error? I am using this code for other problems it is working fine but on prinkinsons data it is showing error. Anybody who can help?

I suggest that you learn to use the debugger. Alan Weiss MATLAB mathematical toolbox documentation

3 months ago | 0

Answered

Using fminsearch with a function containing summation (via for loop)

Youu have several typos in the problem. I corrected them as best I could, but please make sure that I didn't change anything tha...

Using fminsearch with a function containing summation (via for loop)

Youu have several typos in the problem. I corrected them as best I could, but please make sure that I didn't change anything tha...

3 months ago | 0

| accepted

Answered

what is the maximum population size handled by GA ? What are your advices for large MINLP problems?

General MINLP with over 100 variables are not solvable globally. How can I make this blanket statement? For a general MINLP with...

what is the maximum population size handled by GA ? What are your advices for large MINLP problems?

General MINLP with over 100 variables are not solvable globally. How can I make this blanket statement? For a general MINLP with...

3 months ago | 0

| accepted

Answered

fitcsvm cross-validation

As shown in this doc example, the cross-validation loss is reported at the command line and plotted by default (I see that you t...

fitcsvm cross-validation

As shown in this doc example, the cross-validation loss is reported at the command line and plotted by default (I see that you t...

3 months ago | 0

| accepted

Answered

Start genetic algorithm more than once until solution is found

Of course, just write a loop. runon = true while runon % Call ga with option set to stop early if necessary % If you didn't ...

Start genetic algorithm more than once until solution is found

Of course, just write a loop. runon = true while runon % Call ga with option set to stop early if necessary % If you didn't ...

3 months ago | 0

Answered

This is for two variable optimization problem using conjugate gradient method but I need to modify the provided code below so that I can check any function having more than two variable lets say 5 variables. Please help me I am new in matlab.

See my answer here: https://www.mathworks.com/matlabcentral/answers/801106-someone-please-help-me-i-have-made-a-2-variable-code...

This is for two variable optimization problem using conjugate gradient method but I need to modify the provided code below so that I can check any function having more than two variable lets say 5 variables. Please help me I am new in matlab.

See my answer here: https://www.mathworks.com/matlabcentral/answers/801106-someone-please-help-me-i-have-made-a-2-variable-code...

3 months ago | 0

Answered

someone please help me. I have made a 2 variable code for optimization, I want code for "n" no. of variables.

It is probably a bit easier to write code for NUMERIC minimizaton of an arbitrary-sized expression than a hybrid SYMBOLIC minimi...

someone please help me. I have made a 2 variable code for optimization, I want code for "n" no. of variables.

It is probably a bit easier to write code for NUMERIC minimizaton of an arbitrary-sized expression than a hybrid SYMBOLIC minimi...

3 months ago | 0

Answered

Writing complicated equations for problem-based optimization

I think that you need to keep clear in your mind (and code) what is an optimization variable and what is an optimization express...

Writing complicated equations for problem-based optimization

I think that you need to keep clear in your mind (and code) what is an optimization variable and what is an optimization express...

3 months ago | 0

| accepted

Answered

3D Scatterplot and Pareto Front visualization

Did you try the scatteredinterpolant code from the answer? Modify it for your data: F = scatteredInterpolant(numbers(:,1),numbe...

3D Scatterplot and Pareto Front visualization

Did you try the scatteredinterpolant code from the answer? Modify it for your data: F = scatteredInterpolant(numbers(:,1),numbe...

3 months ago | 0