Stiefel Grassmann Optimization (SG_MIN)
Welcome to my SG_MIN website. Hopefully, you
have been directed here by, or by someone associated with
the Eigenvalues Templates book,
so you already know what Stiefel Grassmann optimization
is. If not, then follow the link and read section 9.4 of the book
Nonlinear Eigenvalue Problems With Orthogonality Constraints
Currently, sg_min has sample applications for nearest
degenerate eigenproblems, least square diagonalization problems, procrustes
problems, and electronic structures problems. One day, I might
add nearest degenerate pencil problems.
sg_min version 2.4.3.
The link brings you a gzipped tarball
containing Matlab-style '.m' files which de-tar into their own
If you find bugs, have suggestions for improvement, or
other applications which would be of interest, don't
hesitate to email me.
(Lately, I have done an modification for oblique contraints,
ob_min version 1.0.)
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