fmincon: firstorderopt at each iteration
2 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
Pengfei
am 29 Sep. 2015
Kommentiert: Pengfei
am 1 Okt. 2015
how to find the source code where optimValues.firstorderopt is computed?
optimValues.firstorderopt is shared by several iterative optimization algorithms. I want to see the formula used for it. But I can't trace it down, "Find Files" tried but no work.
Thank you!
0 Kommentare
Akzeptierte Antwort
Madhav Rajan
am 1 Okt. 2015
I understand that you want to figure out how 'optimValues.firstorderopt' is computed. I executed a simple example of fmincon along with the a custom ouputput function. Then I placed a break point and stepped in through the different functions that were being called just before my custom output function. It appears that the 'firstorderopt' variable is set in the file 'nlconst.m' at line 952 or 954 inside the 'callOutputAndPlotFcns' to a variable called 'optimerror'. This variable 'optimerror' is set at line 407 and is based on 'normgradLag' and 'normcomp' variables computed at line 404 and 405 respectively of the same file 'nlconst.m'. Using breakpoints and stepping into the file would help find the formula of calculating the 'firstorderopt'.
You can edit the file 'nlconst.m' using the following command
>> edit nlconst.m
Hope this helps.
Weitere Antworten (0)
Siehe auch
Produkte
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!