NAME¶

KinoSearch1::Analysis::Stopalizer - suppress a "stoplist" of common words

SYNOPSIS¶

    my $stopalizer = KinoSearch1::Analysis::Stopalizer->new(
        language => 'fr',
    );
    my $polyanalyzer = KinoSearch1::Analysis::PolyAnalyzer->new(
        analyzers => [ $lc_normalizer, $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
    @token_texts = ('i', 'am', 'the', 'walrus');
    
    # after
    @token_texts = ('',  '',   '',    'walrus');

CONSTRUCTOR¶

new¶

    my $stopalizer = KinoSearch1::Analysis::Stopalizer->new(
        language => 'de',
    );
    
    # or...
    my $stopalizer = KinoSearch1::Analysis::Stopalizer->new(
        stoplist => \%stoplist,
    );

new() takes two possible parameters, "language" and "stoplist". If "stoplist" is supplied, it will be used, overriding the behavior indicated by the value of "language".

•

stoplist - must be a hashref, with stopwords as the keys of the hash and values set to 1.

•

language - must be the ISO code for a language. Loads a default stoplist supplied by Lingua::StopWords.

SEE ALSO¶

Lingua::StopWords

COPYRIGHT¶

Copyright 2005-2010 Marvin Humphrey

LICENSE, DISCLAIMER, BUGS, etc.¶

See KinoSearch1 version 1.01.