Re: [OctDev] changes in optim

[Etienne G. <et...@cs...>]

  Hi again,

my previous mail set aside, I approve entirely having a C++
implementation of bfgs.

  Cheers,

  Etienne

On Thu, May 20, 2004 at 12:08:25PM -0400, Etienne Grossmann wrote:
# 
#   Hi all,
# 
# On Thu, May 20, 2004 at 02:36:50PM +0200, Michael Creel wrote:
# # Hello all,
# # I have made some significant changes in the ./main/optim directory.
# # 
# # bfgs.m and bs_gradient.m have been replaced with bfgsmin.cc and 
# # numgradient.cc. The first change introduces interface incompatibilities, but 
# # the second has a common interface.
# #
# # There will be some errors in functions that call bfgs.m until the new 
# # interface and function name are adopted.
# 
# I would have prefered to have bfgs and bfgsmin coexist for some time,
# i.e. until 'minimize' uses 'bfgsmin' and a warning message
# 
#  'bfgs is obsolete and will be removed from future octave-forge releases'
# 
# has amply warned users of 'bfgs' to do the switch. Is it still time to
# put back bfgs and dependencies?
# 
#   Just my 2c,
# 
#   Etienne
# 
# # There are also two new minimization routines: lbfgsmin.cc and samin.cc, that 
# # implement limited memory BFGS, and Simulated Annealing.
# # 
# # There is also a celleval.cc, which is like leval.cc, but for cells. Perhaps 
# # this might be useful in contexts other that optimization.
# # 
# # The motivation for the change is the greater speed and reliability of the new 
# # routines. I can post documentation if anyone is interested.
# # 
# # I'm sorry for any inconveniences adapting interfaces might cause. I have kept 
# # snapshots of the replaced functions if anyone needs them.
# # 
# # Regards, Michael
# # 
# # 
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# -- 
# Etienne Grossmann ------ http://www.cs.uky.edu/~etienne

-- 
Etienne Grossmann ------ http://www.cs.uky.edu/~etienne