Showing posts with label openopt. Show all posts
Showing posts with label openopt. Show all posts

Thursday, March 15, 2012

OpenOpt Suite 0.38

I'm glad to inform you about new OpenOpt Suite quarter release 0.38, free (BSD license) Python-written software:

OpenOpt:

interalg can handle discrete variables (see MINLP for examples)
interalg can handle multiobjective problems (MOP)
interalg can handle problems with parameters fixedVars/freeVars
Many interalg improvements and some bugfixes
Add another EIG solver: numpy.linalg.eig
New LLSP solver pymls with box bounds handling

FuncDesigner:

Some improvements for sum()
Add funcs tanh, arctanh, arcsinh, arccosh
Can solve EIG built from derivatives of several functions, obtained by automatic differentiation by FuncDesigner

SpaceFuncs:

Add method point.symmetry(Point|Line|Plane)
Add method LineSegment.middle
Add method Point.rotate(Center, angle)

DerApproximator:

Minor changes

See also: FuturePlans.

Regards, D.

Thursday, September 15, 2011

OpenOpt Suite 0.36

New release of the free BSD-licensed software OpenOpt Suite is out:

OpenOpt:

* Now solver interalg can handle all types of constraints and integration problems

* Some minor improvements and code cleanup

FuncDesigner:

* Interval analysis now can involve min, max and 1-d monotone splines R -> R of 1st and 3rd order

* Some bugfixes and improvements

SpaceFuncs:

* Some minor changes

DerApproximator:

* Some improvements for obtaining derivatives in points from R^n where left or right derivative for a variable is absent, especially for stencil > 1

See http://openopt.org for more details.