Answered

How is "feasibility" defined in fmincon?

Or see the documentation of iterative display for fmincon. Alan Weiss MATLAB mathematical toolbox documentation

How is "feasibility" defined in fmincon?

Or see the documentation of iterative display for fmincon. Alan Weiss MATLAB mathematical toolbox documentation

3 mois ago | 0

| accepted

Answered

Different optimization methods not working when I change derivative discretization.

I do not understand why you are creating approximate derivatives yourself. fmincon and the other optimization functions perform ...

Different optimization methods not working when I change derivative discretization.

I do not understand why you are creating approximate derivatives yourself. fmincon and the other optimization functions perform ...

3 mois ago | 0

Answered

Optimize function with Bayesian Optimization

As clearly stated in the documentation for bayesopt, the function passes a TABLE of values. However, rastriginsfcn expects a 2-D...

Optimize function with Bayesian Optimization

As clearly stated in the documentation for bayesopt, the function passes a TABLE of values. However, rastriginsfcn expects a 2-D...

3 mois ago | 0

| accepted

Answered

use of fminunc with more than one variables

Please see the documentation on writing scalar objective functions. If you have Release 2019a, you can also use the problem-bas...

use of fminunc with more than one variables

Please see the documentation on writing scalar objective functions. If you have Release 2019a, you can also use the problem-bas...

4 mois ago | 0

Answered

GA violates the linear inequality constraints

You have expressed your constraints as nonlinear inequality constraints, not as linear inequality constraints. If the constraint...

GA violates the linear inequality constraints

You have expressed your constraints as nonlinear inequality constraints, not as linear inequality constraints. If the constraint...

4 mois ago | 0

| accepted

Answered

How to set up user-supplied Hessian in fmincon for a minimization problem with nonlinear objective and nonlinear constraint?

For general advice related to this sort of problem, see Converged to an Infeasible Point. Alan Weiss MATLAB mathematical toolb...

How to set up user-supplied Hessian in fmincon for a minimization problem with nonlinear objective and nonlinear constraint?

For general advice related to this sort of problem, see Converged to an Infeasible Point. Alan Weiss MATLAB mathematical toolb...

4 mois ago | 0

Answered

genetic algorithm optimisation toolbox

If you have a multiobjective function, then use gamultiobj instead of ga. Alan Weiss MATLAB mathematical toolbox documentation...

genetic algorithm optimisation toolbox

If you have a multiobjective function, then use gamultiobj instead of ga. Alan Weiss MATLAB mathematical toolbox documentation...

4 mois ago | 1

| accepted

Answered

How to solve an optimization problem with stability constraints using 'fmincon'?

Perhaps this example will give you some ideas. It is written as a multiobjective problem, but you can adapt the code easily to s...

How to solve an optimization problem with stability constraints using 'fmincon'?

Perhaps this example will give you some ideas. It is written as a multiobjective problem, but you can adapt the code easily to s...

4 mois ago | 1

Answered

I have a time series of monthly log returns, and want to transform these into monthly log prices. How do I proceed?

doc cumsum Alan Weiss MATLAB mathematical toolbox documentation

I have a time series of monthly log returns, and want to transform these into monthly log prices. How do I proceed?

doc cumsum Alan Weiss MATLAB mathematical toolbox documentation

4 mois ago | 0

Answered

Bayesopt: min observed objective not decreasing

Take a look at the note in the documentation of Coupled Constraints. Alan Weiss MATLAB mathematical toolbox documentation

Bayesopt: min observed objective not decreasing

Take a look at the note in the documentation of Coupled Constraints. Alan Weiss MATLAB mathematical toolbox documentation

4 mois ago | 0

Answered

Plotting ga custom plot with additional inputs (calculated parameters )

When you create an anonymous function to pass extra parameters, the parameters that are available in the nested function are the...

Plotting ga custom plot with additional inputs (calculated parameters )

When you create an anonymous function to pass extra parameters, the parameters that are available in the nested function are the...

4 mois ago | 0

Answered

Find specific point in unknown "function"

The most efficient way is to use fzero as Torsten said. Your function is @(x)y(x)-1. For the most efficiency, set the initial po...

Find specific point in unknown "function"

The most efficient way is to use fzero as Torsten said. Your function is @(x)y(x)-1. For the most efficiency, set the initial po...

4 mois ago | 2

| accepted

Answered

GA calculates wrong penalty

To answer your second question first, if you set a problem structure as documented then you can call ga by [x,fval] = ga(proble...

GA calculates wrong penalty

To answer your second question first, if you set a problem structure as documented then you can call ga by [x,fval] = ga(proble...

4 mois ago | 0

| accepted

Answered

GA calculates wrong penalty

You are probably seeing the result of the integer-constrained solver. The fitness function is modified by a penalty term. It is ...

GA calculates wrong penalty

You are probably seeing the result of the integer-constrained solver. The fitness function is modified by a penalty term. It is ...

4 mois ago | 0

Answered

Problems with fmincon constraints writing

You should not use linear constraints that way. Instead, use bounds. Your nonlinear constraint function looks fine. The reason...

Problems with fmincon constraints writing

You should not use linear constraints that way. Instead, use bounds. Your nonlinear constraint function looks fine. The reason...

4 mois ago | 0

Answered

neumann boundary condition in diffusion on a disk and ring

I think that you might be making a modeling error. If the flux across the boundaries is zero, then perhaps you should not have t...

neumann boundary condition in diffusion on a disk and ring

I think that you might be making a modeling error. If the flux across the boundaries is zero, then perhaps you should not have t...

4 mois ago | 0

Answered

Change the value of a variable between each iteration of fminsearch

I still think that I do not understand what you are really trying to do. But if you wnat to keep two functions equal, then in fm...

Change the value of a variable between each iteration of fminsearch

I still think that I do not understand what you are really trying to do. But if you wnat to keep two functions equal, then in fm...

4 mois ago | 0

Answered

Not enough input arguments for 'bayesopt'?

Please look at the documentation on Bayesian objective functions. The bayesopt solver passes a table to the objective function. ...

Not enough input arguments for 'bayesopt'?

Please look at the documentation on Bayesian objective functions. The bayesopt solver passes a table to the objective function. ...

4 mois ago | 1

Answered

fmincon: interior-point & SQP computational complexity

This question can probably be best estimated by scaling the problem from small to medium to lmedium-arge, running fmincon on all...

fmincon: interior-point & SQP computational complexity

This question can probably be best estimated by scaling the problem from small to medium to lmedium-arge, running fmincon on all...

4 mois ago | 1

Answered

How can I extract function evaluations that happen during iterations (fmincon) ?

The only way I know to do this is to have your objective function either display or write the values as it calculates them. The ...

How can I extract function evaluations that happen during iterations (fmincon) ?

The only way I know to do this is to have your objective function either display or write the values as it calculates them. The ...

4 mois ago | 0

| accepted

Answered

i need help in optimization toolbox

It is possible that the documentation has enough detail for your purpose: Genetic Algorithm Terminology How the Genetic Algori...

i need help in optimization toolbox

It is possible that the documentation has enough detail for your purpose: Genetic Algorithm Terminology How the Genetic Algori...

4 mois ago | 0

Answered

Use Bayesian Optimization on Existing Database

Do you want to query your database or run your model? If you want to just query your database, input the database into MATLAB an...

Use Bayesian Optimization on Existing Database

Do you want to query your database or run your model? If you want to just query your database, input the database into MATLAB an...

4 mois ago | 0

Answered

Choosing the best approach to quadratic progamming problem

The differences between the approaches are outlined here. There are several examples of quadratic programming here, both problem...

Choosing the best approach to quadratic progamming problem

The differences between the approaches are outlined here. There are several examples of quadratic programming here, both problem...

4 mois ago | 0

Answered

Question about an effect of ConstraintTolerance on multiple constraints for GA optimization

Thank you for the clear explanation. You have a difficult nonlinear problem with all integer variables. The solver is struggling...

Question about an effect of ConstraintTolerance on multiple constraints for GA optimization

Thank you for the clear explanation. You have a difficult nonlinear problem with all integer variables. The solver is struggling...

4 mois ago | 1

| accepted

Answered

Sparsity exploitation in optimization

There are several fmincon algorithms, and they each exploit sparsity differently. The term "large-scale" means that an algorithm...

Sparsity exploitation in optimization

There are several fmincon algorithms, and they each exploit sparsity differently. The term "large-scale" means that an algorithm...

5 mois ago | 0

Answered

Algorithm parameter of solve ignored

You are passing the options incorrectly. See this example on the solve function reference page. Alan Weiss MATLAB mathematical...

Algorithm parameter of solve ignored

You are passing the options incorrectly. See this example on the solve function reference page. Alan Weiss MATLAB mathematical...

5 mois ago | 0

| accepted

Answered

How to use the decision variables of the optimization problem in if else statement

I do not understand your formulation. You have ll and ul as optimization variables, which is why you are getting the complaints ...

How to use the decision variables of the optimization problem in if else statement

I do not understand your formulation. You have ll and ul as optimization variables, which is why you are getting the complaints ...

5 mois ago | 0

Answered

fmincon with sqp algorithm but without inclduing a gradient

See Benefits of Including Derivatives in the documentation. Alan Weiss MATLAB mathematical toolbox documentation

fmincon with sqp algorithm but without inclduing a gradient

See Benefits of Including Derivatives in the documentation. Alan Weiss MATLAB mathematical toolbox documentation

5 mois ago | 1

Answered

Drawing parabolas in pdeModeler

pdeModeler is for 2-D problems, so I assume that you have 2-D geometry. In this case, you can use a parametrized function for 2-...

Drawing parabolas in pdeModeler

pdeModeler is for 2-D problems, so I assume that you have 2-D geometry. In this case, you can use a parametrized function for 2-...

5 mois ago | 0

Answered

Error using fminunc with array as function output and multiple inputs

It is not clear what you are trying to do. Your P(x,T,Tmed) is not a scalar, so it is not clear what it means to minimize it. Y...

Error using fminunc with array as function output and multiple inputs

It is not clear what you are trying to do. Your P(x,T,Tmed) is not a scalar, so it is not clear what it means to minimize it. Y...

5 mois ago | 0