[Scipy-tickets] [SciPy] #1454: patch to allow optimize of nonsquare or degenerate systems

SciPy Trac scipy-tickets@scipy....
Sun Jun 5 13:17:06 CDT 2011


#1454: patch to allow optimize of nonsquare or degenerate systems
----------------------------+-----------------------------------------------
 Reporter:  dstahlke        |       Owner:  somebody   
     Type:  enhancement     |      Status:  needs_work 
 Priority:  normal          |   Milestone:  Unscheduled
Component:  scipy.optimize  |     Version:  devel      
 Keywords:                  |  
----------------------------+-----------------------------------------------

Comment(by pv):

 Interesting, I assumed the MINPACK routines would handle also `m < n`, but
 apparently not. The reason why they don't is probably that for `m < n` the
 minimum is some manifold of points, which causes problems in the
 termination conditions.

 So would be after all some interest in adding also a small-scale solver
 for underdetermined least-square problems.

-- 
Ticket URL: <http://projects.scipy.org/scipy/ticket/1454#comment:5>
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