Tomáš Kraut > Treex-Unilang > Treex::Tool::Segment::RuleBased

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Module Version: 0.08170   Source   Latest Release: Treex-Unilang-0.13095

NAME ^

Treex::Tool::Segment::RuleBased - Rule based pseudo language-independent sentence segmenter

VERSION ^

version 0.08170

DESCRIPTION ^

Sentence boundaries are detected based on a regex rules that detect end-sentence punctuation ([.?!]) followed by a uppercase letter. This class is implemented in a pseudo language-independent way, but it can be used as an ancestor for language-specific segmentation by overriding the method segment_text (using around see Moose::Manual::MethodModifiers) or just by overriding methods unbreakers, openings and closings.

See Treex::Block::W2A::EN::Segment

METHODS ^

get_segments

Returns list of sentences

METHODS TO OVERRIDE ^

segment_text

Do the segmentation (handling use_paragraphs and use_lines)

$text = split_at_terminal_punctuation($text)

Adds newlines after terminal punctuation followed by an uppercase letter.

unbreakers

Returns regex that should match tokens that usually do not end a sentence even if they are followed by a period and a capital letter: * single uppercase letters serve usually as first name initials * in langauge-specific descendants consider adding * period-ending items that never indicate sentence breaks * titles before names of persons etc.

openings

Returns string with characters that can appear before the first word of a sentence

closings

Returns string with characters that can appear after period (or other end-sentence symbol)

AUTHOR ^

Martin Popel <popel@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.

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