07 Mar 2007 06:17:55 UTC
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- Distribution: KinoSearch
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- Latest versionCREAMYG Marvin Humphreyand 1 contributors
- Marvin Humphrey <marvin at rectangular dot com>
KinoSearch::Analysis::Stopalizer - Suppress a "stoplist" of common words.
my $stopalizer = KinoSearch::Analysis::Stopalizer->new( language => 'fr', ); my $polyanalyzer = KinoSearch::Analysis::PolyAnalyzer->new( analyzers => [ $lc_normalizer, $tokenizer, $stopalizer, $stemmer ], );
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');
my $stopalizer = KinoSearch::Analysis::Stopalizer->new( language => 'de', ); # or... my $stopalizer = KinoSearch::Analysis::Stopalizer->new( stoplist => \%stoplist, );
new() takes two possible parameters,
stoplistis supplied, it will be used, overriding the behavior indicated by the value of
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 2005-2007 Marvin Humphrey
See KinoSearch version 0.20.