KinoSearch1::Analysis::Stopalizer(3) 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.

COPYRIGHT

Copyright 2005-2010 Marvin Humphrey

LICENSE, DISCLAIMER, BUGS, etc.

See KinoSearch1 version 1.01.

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