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Frank


Last seen: 5 mesi fa |  Attivo dal 2018

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Domanda


how does fmincon deal with ill-conditioned problem?
Do I need to do regularization to my problem such as with Tikhonov regularization before applying fmincon? Thank you very much!...

7 mesi fa | 3 risposte | 0

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Domanda


selecting units for (1) scaling of variable and (2) condition number minimization
In gradient-based optimization problem, selecting units can influence the condition number of the gradient. A smaller condition...

9 mesi fa | 1 risposta | 1

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Domanda


fmincon stopped when Norm of step is far larger than StepTolerance
My Norm of step is about 10 and my StepTolerance is 1.0000e-14. Then Matlab says: fmincon stopped because the size of the curr...

9 mesi fa | 1 risposta | 1

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Domanda


how does fmincon interior-point algorithm deals wtih underdetermined system?
I am working on a tomography problem that may become underdetermined during iteration. To handle this, I may give NaN to fmincon...

12 mesi fa | 1 risposta | 0

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Domanda


my nonlinear constraints HAVE to be satisfied, what to do next?
I am working on a sophisticated anisotropic tomographic modeling project. I recently learned that the fmincon function in MATLAB...

12 mesi fa | 2 risposte | 0

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Domanda


Is it it possible to make fmincon strictly follows the nonlinear constraints?
I have searched and read many articles but didn't find the answer. I often use the fmincon interior-point algorithm. I understa...

12 mesi fa | 1 risposta | 0

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Domanda


fmincon nonlinear inequality constraint including variable with range?
function [c,ceq] = nonlcon(x) c(1) The above is the name and content of a nonlinear inequality constraint. If I want to write...

12 mesi fa | 1 risposta | 0

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Domanda


Square root in objective function must appear as nonlinear constraints for optimization?
The title already described my question. Let me give a specific example: If I have in my objective function for fmincon to opt...

circa 5 anni fa | 4 risposte | 0

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Risposto
How to solve LMIs with equality constraints using MATLAB?
Section 2.5 of Byod's book Linear Matrix Inequalities in System and Control Theory specifically talks about this problem.

oltre 5 anni fa | 0

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Function handle in lsqr
Thank you indeed for your very very specific answer to this question!

quasi 6 anni fa | 0

Domanda


Function handle in lsqr
https://www.mathworks.com/help/matlab/ref/lsqr.html In the above page, there is code: function y = afun(x,transp_flag) ...

quasi 6 anni fa | 2 risposte | 0

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