OpenOpt 0.19 announced
[Posted September 16, 2008 by cook]
| From: |
| dmitrey <dmitrey.kroshko-AT-scipy.org> |
| To: |
| comp-lang-python-announce-AT-moderators.isc.org |
| Subject: |
| ANN: OpenOpt 0.19 (free optimization framework, Python language) |
| Date: |
| Mon, 15 Sep 2008 11:37:40 -0700 (PDT) |
| Message-ID: |
| <17bc7621-05b1-44e2-a914-9b05c24ef505@m73g2000hsh.googlegroups.com> |
Hello,
We're pleased to announce:
OpenOpt v 0.19, free (license: BSD) optimization framework
(written in Python language) with connections to lots of solvers (some
are C- or Fortran-written) is released.
Changes since previous release 0.18 (June 15, 2008):
* Some changes for NLP/NSP solver ralg (especially related to
handling linear constraints Ax <= b, Aeq x = beq, lb <= x <= ub)
* Bugfix for ralg and IPOPT linear constraints handling
* ALGENCAN v 2.0.x has been connected (v 1.0 is no longer
supported, v 2.0.3 or later is required)
* Bugfix for constrained NLSP graphic output (constrained nssolve
isn't turned to latest ralg version yet)
* Scale parameter for lpSolve (p.scale = {False} | True | 0 | 1)
* New OO class LLAVP (linear least absolute values aka linear
least deviations)
* Improved handling of non-linear functions with restricted dom
* GLP (global) solver galileo now can handle integer problems (via
p.useInteger = 1 or True)
* Another one GLP (global) solver connected: pswarm
* Lots of work related to oofun concept (see OO Doc page for
details)
* Add converters llsp2nlp, llavp2nsp
* Convenient handling of maximization problems (via p.goal = 'max'
or 'maximum')
* Some code clean up and bugfixes
Backward incompatibility:
* Changed objective function in LLSP
* MATLAB-style gradtol renamed to gtol (for to provide same syntax
to scipy.optimize fmin_bfgs, fmin_cg and less-to-type)
Newsline:
http://openopt.blogspot.com/
Homepage:
http://scipy.org/scipy/scikits/wiki/OpenOpt
Regards,
OpenOpt developers.
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