Scilab Function ucost - Evaluate objective function and gradient
Calling Sequence
- [f,gred,ind] = ucost(X,ind)
Parameters
- X
: real vector, variable of minimization.
- ind
: indicator for function evaluation
- f
: objective function evaluated
- gred
: reduced gradient of f evaluated at X. Only not fixed components
are returned.
- ind
: returned indicator
Description
ubanh returns functon and gradient evaluation. ucost is designed to put
aside evaluation on fixed variables. print: Set print to 0 if you don't
want intermediate results Set print to n if you want results every n
iterations. (default) no output genarted if print omitted. ind: See
optim about costf for more details.
Examples
x=[-1;1;0];bl=[-1E+20;1;-1E+20];bu=[1E+20;1;1E+20];
[f,gred,ind]=ucost(x,4) [f,gred,ind]=ucost(x,4,1)
See Also
Bibliography
Based on CUTEr authored by
Nicholas I.M. Gould - n.gould@rl.ac.uk - RAL
Dominique Orban - orban@ece.northwestern.edu - Northwestern
Philippe L. Toint - Philippe.Toint@fundp.ac.be - FUNDP
see http://hsl.rl.ac.uk/cuter-www