/ 
Treex-Parser-MSTperl-0.07298
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/ Treex::Tool::Parser::MSTperl::TrainerUnlabelled

NAME

Treex::Tool::Parser::MSTperl::TrainerUnlabelled

VERSION

version 0.07298

DESCRIPTION

Trains on correctly parsed sentences and so creates and tunes the model. Uses single-best MIRA (McDonald et al., 2005, Proc. HLT/EMNLP)

FIELDS

parser

Reference to an instance of Treex::Tool::Parser::MSTperl::Parser which is used for the training.

model

Reference to an instance of Treex::Tool::Parser::MSTperl::ModelUnlabelled which is being trained.

METHODS

$trainer->train($training_data);

Trains the model, using the settings from config and the training data in the form of a reference to an array of parsed sentences (Treex::Tool::Parser::MSTperl::Sentence), which can be obtained by the Treex::Tool::Parser::MSTperl::Reader.

$self->mira_update($sentence_correct_parse, $sentence_best_parse, $sumUpdateWeight)

Performs one update of the MIRA (Margin-Infused Relaxed Algorithm) on one sentence from the training data. Its input is the correct parse of the sentence (from the training data) and the best scoring parse created by the parser.

AUTHORS

Rudolf Rosa <rosa@ufal.mff.cuni.cz>

COPYRIGHT AND LICENSE

Copyright © 2011 by Institute of Formal and Applied Linguistics, Charles University in Prague

This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.