/ 
KinoSearch-0.315
River stage two • 9 direct dependents • 10 total dependents
/ KinoSearch::Analysis::Stopalizer

NAME

KinoSearch::Analysis::Stopalizer - Suppress a "stoplist" of common words.

DEPRECATED

The KinoSearch code base has been assimilated by the Apache Lucy project. The "KinoSearch" namespace has been deprecated, but development continues under our new name at our new home: http://lucy.apache.org/

SYNOPSIS

my $stopalizer = KinoSearch::Analysis::Stopalizer->new(
    language => 'fr',
);
my $polyanalyzer = KinoSearch::Analysis::PolyAnalyzer->new(
    analyzers => [ $case_folder, $tokenizer, $stopalizer, $stemmer ],
);

DESCRIPTION

A "stoplist" is collection of "stopwords": words which are common enough to be of little value when determining search results. For example, so many documents in English contain "the", "if", and "maybe" that it may improve both performance and relevance to block them.

Before filtering stopwords:

( "i", "am", "the", "walrus" )

After filtering stopwords:

( "walrus" )

Stopalizer provides default stoplists for several languages, courtesy of the Snowball project (<http://snowball.tartarus.org>), or you may supply your own.

CONSTRUCTORS

new( [labeled params] )

my $stopalizer = KinoSearch::Analysis::Stopalizer->new(
    language => 'de',
);

# or...
my $stopalizer = KinoSearch::Analysis::Stopalizer->new(
    stoplist => \%stoplist,
);

  • stoplist - A hash with stopwords as the keys.

  • language - The ISO code for a supported language.

INHERITANCE

KinoSearch::Analysis::Stopalizer isa KinoSearch::Analysis::Analyzer isa KinoSearch::Object::Obj.

COPYRIGHT AND LICENSE

Copyright 2005-2011 Marvin Humphrey

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