[Scilab-users] optim

[fujimoto2005]

Hi,mottelet 

Now I understand I don't need to provide the value of 'Ind '.
As explained in the help page, 'the ind input argument is a message sent
from the solver to the cost function ' .

Also I understand  I have to provide the gradient explicitly even if I don't
need its value.
Unless an user does't  provide the gradient explicitly, the solver must
estimate it numerically even if there is an analytical form of the gradient. 
In general numerical estimation  is time-consuming compared with the  the
analytical form.
So solver asks a user to provide the gradient explicitly  to avoid
time-consuming estimation.
  
Best regards



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