NAME
Algorithm::ContextVector - Simple implementation based on Data::CosineSimilarity
SYNOPSIS
my $cv = Algorithm::ContextVector->new( top => 300 );
$cs->add_instance( label => 'label1', attributes => { feature1 => 3, feature2 => 1, feature3 => 10 } );
$cs->add_instance( label => [ 'label2', 'label3' ], attributes => { ... } );
$cs->add_instance( label => ..., attributes => ... );
...
$cv->train;
my $results = $cv->predict( attributes => { ... } );
DESCRIPTION
Simple implementation based on Data::CosineSimilarity
$class->new( top => ... )
During the training, keeps the $top most heavy weighted features. Keeps
the complete feature set if omitted.
$class->new_from_file( $filename )
Returns the instance of Algorithm::ContextVector stored in $filename.
$self->save_to_file( $filename )
Save the $self to $filename using Storable.
$self->add_instance( label => [ ... ], attributes => { ... } )
$self->train
Keeps the best features (top N) and norms the vectors.
$self->predict( attributes => { ... } )
Returns a hashref with the labels as the keys and the cosines as the
values.
AUTHOR
Antoine Imbert, "<antoine.imbert at gmail.com>"
LICENSE AND COPYRIGHT
This library is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.