[SciPy-user] Semidefinite programming in scipy ?

Zhiwen Chong zhiwen.chong at elf.mcgill.ca
Mon Jul 4 15:55:00 CDT 2005

Hello Nils,

On 4-Jul-05, at 3:45 PM, Nils Wagner wrote:
> Actually, I am interested in eigenvalue optimization.
> Are you aware of freely available software for this
> topic ?

Unfortunately I know very little about eigenvalue optimization. If  
you can express your problem as an SDP, then you can use any number  
of SDP solvers. Most accept the SDPA input format (which looks fairly  

Here's a list of current SDP solvers: (scroll down a little)

The guys working in the building across from mine are maintaining  
Blurb: SeDuMi is a software package to solve optimization problems  
over symmetric cones. This includes linear, quadratic, second order  
conic and semidefinite optimization, and any combination of these. Free.

Sorry I couldn't be of more help. Perhaps someone else on this list  
knows more about this subject.


Side note: I took a peek at scipy.optimize; I don't think you'll find  
an SDP optimizer there. Most of the functions there are your standard  
line searches and basic algorithms like Newton, Trust Region,  
Conjugate Gradient, variable metric BFGS  and some DFO-type  
algorithms etc.

More information about the SciPy-user mailing list