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DerApproximator Changelog

What's new in DerApproximator 0.52

Oct 13, 2014
  • Minor interalg speedup
  • oofun expression
  • MATLAB solvers fmincon (NLP) and fsolve (SNLE) have been connected
  • Several MATLAB ODE solvers have been connected
  • New ODE solvers, parameters abstol and reltol
  • New GLP solver: direct
  • Some minor bugfixes and improvements

New in DerApproximator 0.38 (Mar 16, 2012)

  • Minor changes

New in DerApproximator 0.36 (Oct 3, 2011)

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

New in DerApproximator 0.33 (Mar 17, 2011)

  • OpenOpt:
  • cplex has been connected
  • New GLP solver interalg with guarantied precision (also can work in inexact mode)
  • New solver amsg2p for medium-scaled NLP and NSP
  • FuncDesigner:
  • Essential speedup for automatic differentiation when vector-variables are involved, for both dense and sparse cases
  • Solving MINLP become available
  • Add Uncertainty analysis
  • Add Interval analysis
  • Now you can solve systems of equations with automatic determination is the system linear or nonlinear (subjected to given set of free or fixed variables), see the doc entry for details
  • FD Funcs min and max can work on lists of oofuns
  • Bugfix for sparse SLE (system of linear equations), that slowed down computation time and demanded more memory
  • New oofuns angle, cross
  • Using OpenOpt result(oovars) is available, also, start points with oovars() now can be assigned easier
  • SpaceFuncs:
  • Some bugfixes
  • DerApproximator:
  • Adjusted with some changes in FuncDesigner
  • Backward incompatibilities:
  • FD oovars() now returns ooarray instead of Python list
  • New OpenOpt parameter p.useAttachedConstraints, is False by default, set it to True to involve them. Maybe this will be reworked till next release, where user- and kernel- attached constraints will be handled separately

New in DerApproximator 0.21 (Sep 16, 2010)

  • Add parameter exactShape (prevents flattering operations on result)

New in DerApproximator 0.19 (Jun 16, 2010)

  • Function get_d2
  • Add new stencil