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1864 Commits

Author SHA1 Message Date
Davis King 926c2afa6f Added some more tests for the max_cost_assignment() function. 
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 2011-03-23 00:32:15 +00:00
Davis King 4f46a90104 Minor change to avoid a compiler warning in gcc. 
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 2011-03-23 00:24:39 +00:00
Davis King 0e25de9c10 updated docs 
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 2011-03-22 02:42:28 +00:00
Davis King b9a1e0c93a Added the multiclass_linear_decision_function object. 
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 2011-03-22 02:38:46 +00:00
Davis King 1e7659dc64 It occurred to me that in some cases it is very easy to end up with dense vectors 
which are slightly smaller than their corresponding sparse vectors.  So I changed
the requires clause of the dot(sparse,dense) and dot(dense,sparse) functions to not
require that the dense vector's size > sparse vector's size.  Now any combination
of sizes is legal.

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 2011-03-22 00:56:08 +00:00
Davis King 790f442b7d updated docs 
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 2011-03-20 18:37:07 +00:00
Davis King bf43a30c23 Renamed assign_dense_to_sparse() to assign() and made it capable of also 
assigning from sparse to sparse.

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 2011-03-20 18:36:53 +00:00
Davis King f1d98591a8 Clarified spec. 
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 2011-03-20 18:12:48 +00:00
Davis King 02ec16db94 Added a dot() function which can dot a sparse vector with a dense vector. 
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 2011-03-20 14:13:32 +00:00
Davis King 57aed828d4 updated docs 
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 2011-03-18 18:43:10 +00:00
Davis King aed73cd057 This change is mainly about adding a result_type typedef to the various function objects. 
Prior to this change, different function objects declared their return type in different ways,
now this has all been reconciled.  Now they all declare it as a public typedef named result_type.

I also simplified the cross_validate_multiclass_trainer(), cross_validate_trainer(),
test_binary_decision_function(), and test_multiclass_decision_function().  They now always
return double matrices regardless of any other consideration.

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 2011-03-18 18:42:53 +00:00
Davis King 7e934b9de1 Added some tests for the LIBSVM formatted data IO functions 
and related routines.

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 2011-03-18 14:35:35 +00:00
Davis King 4427c91ab4 updated docs 
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 2011-03-18 13:42:31 +00:00
Davis King a6b8cc9b7f Added the fix_nonzero_indexing() function. 
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 2011-03-18 13:31:52 +00:00
Davis King ae79b13a07 made test more robust 
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 2011-03-16 23:42:57 +00:00
Davis King eef728d280 Simplified the oca implementation slightly. It no longer keeps track of the 
best point seen so far.  This change will allow me to use the optimizer in conjunction
with methods for quickly approximating subgradients and risk values without needing
to worry about the optimizer permanently fixating on what it erroneously thinks
is the best point.  Now the optimizer will just keep solving the cutting plane
subproblem and will use that solution as the current iterate and best known
solution.

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 2011-03-16 23:33:25 +00:00
Davis King bc487527d3 updated docs 
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 2011-03-15 22:48:13 +00:00
Davis King d0f2eb4318 Renamed max_index_value_plus_one() (a function for working with graphs) to 
max_index_plus_one() so that it uses the same name as the essentially identical
function for working with sparse vectors.

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 2011-03-15 22:42:33 +00:00
Davis King d8e7ee4c1d Moved some functions for dealing with sparse vectors out of the svm_c_linear_trainer 
implementation and into the sparse_vector.h header.  These are the add_to(), subtract_from(),
and max_index_plus_one() functions.

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 2011-03-15 22:38:36 +00:00
Davis King 392c7758e5 Added a value_type typedef to matrix_exp so it's easier to write templates 
which operate on STL containers and matrix objects.

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 2011-03-15 02:03:06 +00:00
Davis King 730037dc29 Removed some old comments 
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 2011-03-13 18:21:50 +00:00
Davis King 23e169da02 Fixed a bug in the kernel_matrix() function. It didn't compile when used with 
sparse samples which were of type std::vector<std::pair<> >.  Moreover, some of
the trainers have a dependency on kernel_matrix() so this fix makes those trainers
also work with this kind of sparse sample.

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 2011-03-13 17:19:56 +00:00
Davis King 2ee75d5f3d updated docs 
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 2011-03-13 17:15:27 +00:00
Davis King 4ecdd03b70 Added an is_pair template for telling if a type is a std::pair object. 
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 2011-03-13 17:13:01 +00:00
Davis King 975abaf93f Fixed a bug in load_libsvm_formatted_data(). Forgot to clear the contents 
of the labels output vector before adding the loaded label data.

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 2011-03-10 01:14:26 +00:00
Davis King 64afc28ec6 Fixed typo in spec 
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 2011-03-03 22:06:02 +00:00
Davis King 3b98c7bd93 updated docs 
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 2011-03-03 00:43:27 +00:00
Davis King 74fc41c7b4 made a release 
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 2011-03-03 00:16:51 +00:00
Davis King 6c961389a9 updated release notes 
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 2011-03-02 23:56:30 +00:00
Davis King 8656126936 Changed the oca optimizer so that it warm starts the QP subproblem 
rather than resolving it from scratch during each iteration. This
improves the speed and stability of the algorithm.

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 2011-03-02 02:24:11 +00:00
Davis King 2df86dedd1 Changed code slightly to avoid a warning from gcc. 
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 2011-02-22 23:34:52 +00:00
Davis King f291361589 Made max_cost_assignment() take a matrix expression rather than an actual matrix. 
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 2011-02-15 22:48:12 +00:00
Davis King 7dcbdcc07b updated docs 
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 2011-02-14 04:07:27 +00:00
Davis King 4e088f05ac Fixed bug in assert. 
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 2011-02-14 03:52:38 +00:00
Davis King 00521ca389 updated docs 
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 2011-02-14 03:37:45 +00:00
Davis King faa43b4446 Added an implementation of the Hungarian algorithm for solving the optimal 
assignment problem (in the new max_cost_assignment() routine).

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 2011-02-14 03:24:29 +00:00
Davis King a02d50cd7b Fixed typo in comment. 
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 2011-02-13 14:46:05 +00:00
Davis King 5a9381c26b updated docs 
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 2011-02-11 02:11:48 +00:00
Davis King 92d25fab1e Fixed a problem which prevented the any_function unit test from compiling in visual studio 2008. 
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 2011-02-11 02:10:12 +00:00
Davis King a00ab2b747 Made a release 
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 2011-02-11 01:31:03 +00:00
Davis King 53798e2105 updated release notes 
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 2011-02-11 00:17:25 +00:00
Davis King 00413b3e90 Added a test for split() 
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 2011-02-10 23:56:50 +00:00
Davis King bc8479e701 updated docs 
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 2011-02-09 23:00:53 +00:00
Davis King 294f7cfed9 Added a function for splitting up strings which contain a sequence 
of delimited tokens.

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 2011-02-09 22:57:14 +00:00
Davis King 9fd2906bd1 Added a comment about using lambda functions as event handlers. 
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 2011-02-08 23:59:12 +00:00
Davis King a52717a866 Added a unit test for the any_function. 
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 2011-02-08 23:37:54 +00:00
Davis King 3a5602f203 Fixed a bug in any_function which prevented the .get() function 
from compiling.

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 2011-02-08 23:37:29 +00:00
Davis King 714912a6b5 Made the is_function template work with functions of up to 10 arguments. 
Previously it only worked up to 5 arguments.

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 2011-02-08 23:36:42 +00:00
Davis King d751e4e49c updated docs 
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 2011-02-07 23:52:34 +00:00
Davis King 72fbfdb5f8 Fixed a typo in the spec. 
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 2011-02-07 23:32:28 +00:00