[Coin-ipopt] Limiting line search step

Chusslove Illich caslav.ilic at gmx.net
Mon Nov 26 05:04:23 EST 2007


Is there a way to enforce the "never-exceed" value of step size in line
search (which would unfortunatelly depend on each search direction...)? Or
at least a way to make it more conservative?

The problem is that my objective function needs to deform an unstructured
computational grid at one point, which is touchy, and too large a step
crashes it. When the step was limited in a suitable fashion, it worked with
simple BFGS/penalty algorithm.

Chusslove Illich (Часлав Илић)
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 189 bytes
Desc: This is a digitally signed message part.
Url : http://list.coin-or.org/pipermail/ipopt/attachments/20071126/34ecd062/attachment.bin 

More information about the Coin-ipopt mailing list