NAME

KinoSearch1::Analysis::Tokenizer - customizable tokenizing

SYNOPSIS

            

              
              
my $whitespace_tokenizer
    = KinoSearch1::Analysis::Tokenizer->new( token_re => qr/\S+/, );
# or...
my $word_char_tokenizer
    = KinoSearch1::Analysis::Tokenizer->new( token_re => qr/\w+/, );
# or...
my $apostrophising_tokenizer = KinoSearch1::Analysis::Tokenizer->new;
# then... once you have a tokenizer, put it into a PolyAnalyzer
my $polyanalyzer = KinoSearch1::Analysis::PolyAnalyzer->new(
    analyzers => [ $lc_normalizer, $word_char_tokenizer, $stemmer ], );
            
          

DESCRIPTION

Generically, "tokenizing" is a process of breaking up a string into an array of "tokens".

            

              
              
# before:
my $string = "three blind mice";
# after:
@tokens = qw( three blind mice );
            
          

KinoSearch1::Analysis::Tokenizer decides where it should break up the text based on the value of token_re.

            

              
              
# before:
my $string = "Eats, Shoots and Leaves.";
# tokenized by $whitespace_tokenizer
@tokens = qw( Eats, Shoots and Leaves. );
# tokenized by $word_char_tokenizer
@tokens = qw( Eats Shoots and Leaves   );
            
          

METHODS

new

            

              
              
# match "O'Henry" as well as "Henry" and "it's" as well as "it"
my $token_re = qr/
        \b        # start with a word boundary
        \w+       # Match word chars.
        (?:       # Group, but don't capture...
           '\w+   # ... an apostrophe plus word chars.
        )?        # Matching the apostrophe group is optional.
        \b        # end with a word boundary
    /xsm;
my $tokenizer = KinoSearch1::Analysis::Tokenizer->new(
    token_re => $token_re, # default: what you see above
);
            
          

Constructor. Takes one hash style parameter.

• token_re - must be a pre-compiled regular expression matching one token.

COPYRIGHT

Copyright 2005-2010 Marvin Humphrey

LICENSE, DISCLAIMER, BUGS, etc.

See KinoSearch1 version 1.01.