423f64c6cc
git-svn-id: file:///home/svnrepos/software/liblbfgs/trunk@6 ecf4c44f-38d1-4fa4-9757-a0b4dd0349fc
54 lines
1.8 KiB
Plaintext
54 lines
1.8 KiB
Plaintext
2008-04-25 Naoaki Okazaki <okazaki at chokkan org>
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* libLBFGS 1.4:
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- Configurable line search algorithms. A member variable
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lbfgs_parameter_t::linesearch was added to choose either MoreThuente
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method (LBFGS_LINESEARCH_MORETHUENTE) or backtracking algorithm
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(LBFGS_LINESEARCH_BACKTRACKING).
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- Fixed a bug: the previous version did not compute psuedo-gradients
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properly in the line search routines for OW-LQN. This bug might quit
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an iteration process too early when the OW-LQN routine was activated
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(0 < lbfgs_parameter_t::orthantwise_c).
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- Configure script for POSIX environments.
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- SSE/SSE2 optimizations with GCC.
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- New functions lbfgs_malloc and lbfgs_free to use SSE/SSE2 routines
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transparently. It is uncessary to use these functions for libLBFGS
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built without SSE/SSE2 routines; you can still use any memory
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allocators if SSE/SSE2 routines are disabled in libLBFGS.
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2007-12-16 Naoaki Okazaki <okazaki at chokkan org>
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* libLBFGS 1.3:
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- An API change. An argument was added to lbfgs() function to receive
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the final value of the objective function. This argument can be set
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to NULL if the final value is unnecessary.
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- Fixed a null-pointer bug in the sample code (reported by Takashi
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Imamichi).
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- Added build scripts for Microsoft Visual Studio 2005 and GCC.
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- Added README file.
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2007-12-13 Naoaki Okazaki <okazaki at chokkan org>
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* libLBFGS 1.2:
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- Fixed a serious bug in orthant-wise L-BFGS. An important variable
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was used without initialization.
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- Configurable L-BFGS parameters (number of limited memories, epsilon).
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2007-12-01 Naoaki Okazaki <okazaki at chokkan org>
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* libLBFGS 1.1:
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- Implemented orthant-wise L-BFGS.
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- Implemented lbfgs_parameter_init() function.
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- Fixed several bugs.
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- API documentation.
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2007-09-20 Naoaki Okazaki <okazaki at chokkan org>
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* libLBFGS 1.0
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- Initial release.
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