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

SciPy Trac scipy-tickets@scipy....
Sun Jun 5 06:07:36 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):

 For example, implementing inexact Levenberg-Marquardt + CG would be
 welcome. However, here one would need to add `rmul` to `LinearOperator`,
 as the LSQ problems need to know `J^T` (this is often not available in
 matrix-free formulations).

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Ticket URL: <http://projects.scipy.org/scipy/ticket/1454#comment:3>
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