WebJul 15, 2016 · ExitFlag = -2 No feasible solution found. fmincon stopped because the size of the current step is less than the selected value of the step size tolerance but constraints are not satisfied to within the selected value of the constraint tolerance. The 'non-good' results deviate about 2% of the optimal solution and correspond to ExitFlags 2 and -2 ... WebFeb 7, 2024 · As far as I know, the options DiffMinChange and DiffMaxChange always apply to the whole vector and cannot be tuned per-element. What you could do is …
How to choose DiffMinChange value? - MATLAB Answers
WebSep 8, 2013 · The purpose of DiffMinChange and DiffMaxChange is purely to let the user tune and try to improve the accuracy of the gradient/Hessian approximations. It goes without saying, I guess, that if you make a really lousy approximation to the derivatives, your step size (and step direction) can be very different from what you would get if you turned ... WebDiffMinChange is an option for controlling finite difference steps the solver takes to estimate derivatives. It does not directly relate to the step size that the solver takes in its iterations. Usually it is safe to ignore this option, but if you are optimizing a simulation or ODE, consult Optimizaing a Simulation or ODE. Good luck, Alan Weiss. secondary amyloidosis treatment
MATLAB: What does Tolcon, Tolfun and Diffminchange do
WebApr 8, 2024 · DiffMinChange Option in FMINCON (R2024a) I am trying to minimize a certain function, where the finite difference gradients have to be computed with rather … WebDiffMinChange: Lower limit on the perturbation used in MATLAB's finite differencing algorithm. For fmincon, you don't specify a single perturbation value, but rather give … http://www.ece.northwestern.edu/local-apps/matlabhelp/techdoc/ref/optimset.html secondary and primary education