NAME¶

Lingua::Stem::Ru - Porter's stemming algorithm for Russian (KOI8-R only)

SYNOPSIS¶

    use Lingua::Stem::Ru;
    my $stems = Lingua::Stem::Ru::stem({ -words => $word_list_reference,
                                         -locale => 'ru',
                                         -exceptions => $exceptions_hash,
                                      });
    my $stem = Lingua::Stem::Ru::stem_word( $word );

DESCRIPTION¶

This module applies the Porter Stemming Algorithm to its parameters, returning the stemmed words.

The algorithm is implemented exactly as described in:

    http://snowball.tartarus.org/russian/stemmer.html

The code is carefully crafted to work in conjunction with the Lingua::Stem module by Benjamin Franz. This stemmer is also based on the work of Aldo Capini, see Lingua::Stem::It.

METHODS¶

stem({ -words => \@words, -locale => 'ru', -exceptions => \%exceptions });

Stems a list of passed words. Returns an anonymous list reference to the stemmed words.

Example:

  my $stemmed_words = Lingua::Stem::Ru::stem({ -words => \@words,
                                              -locale => 'ru',
                                          -exceptions => \%exceptions,
                          });
    

stem_word( $word );

Stems a single word and returns the stem directly.

Example:

  my $stem = Lingua::Stem::Ru::stem_word( $word );
    

stem_caching({ -level => 0|1|2 });

Sets the level of stem caching.

'0' means 'no caching'. This is the default level.

'1' means 'cache per run'. This caches stemming results during a single
call to 'stem'.

'2' means 'cache indefinitely'. This caches stemming results until
either the process exits or the 'clear_stem_cache' method is called.

clear_stem_cache;

Clears the cache of stemmed words

HISTORY¶

•

0.01 (2004-05-21)

AUTHOR¶

Aleksandr Guidrevitch <pillgrim@mail.ru>

SEE ALSO¶

 Lingua::Stem

COPYRIGHT¶

Copyright (C) 2003 by Aldo Calpini <dada@perl.it>

Copyright (C) 2004 by Aleksandr Guidrevitch <pillgrim@mail.ru>

This software may be freely copied and distributed under the same terms and conditions as Perl itself, either Perl version 5.8.3 or, at your option, any later version of Perl 5 you may have available..