---
name: "Lingua::Stem::Ru"
section: "3pm"
platform: "linux"
package: "liblingua-stem-ru-perl"
version: "0.04-2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/Lingua::Stem::Ru"
---

# Lingua::Stem::Ru(3pm)

Porter's stemming algorithm for Russian (KOI8-R only)

## 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/algorithms/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

### EXPORT

None by default.

## AUTHOR

Aleksandr Guidrevitch \<pillgrim@mail.ru\>

## REPOSITORY

\<https://github.com/neilb/Lingua-Stem-Ru\>

## SEE ALSO

- Lingua::Stem

  provides an interface for some other pure Perl stemmers available on CPAN, including Lingua::Stem::Ru

- Lingua::Stem::Snowball

  - Lingua::Stem::Any

  ## COPYRIGHT AND LICENSE

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

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

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.