Community Profile

photo

Frank


Last seen: 5 maanden ago |  Active since 2018

Followers: 0   Following: 0

Message

Statistics

  • Thankful Level 3
  • First Answer
  • Revival Level 1

View badges

Feeds

View by

Question


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 maanden ago | 3 answers | 0

3

answers

Question


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 maanden ago | 1 answer | 1

1

answer

Question


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 maanden ago | 1 answer | 1

1

answer

Question


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...

11 maanden ago | 1 answer | 0

1

answer

Question


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...

11 maanden ago | 2 answers | 0

2

answers

Question


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 maanden ago | 1 answer | 0

1

answer

Question


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 maanden ago | 1 answer | 0

1

answer

Question


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...

ongeveer 5 jaar ago | 4 answers | 0

4

answers

Answered
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.

meer dan 5 jaar ago | 0

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

meer dan 5 jaar ago | 0

Question


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) ...

meer dan 5 jaar ago | 2 answers | 0

2

answers