Grapheme::Ngram - n-grams of Unicode Extended Grapheme Clusters
use Grapheme::Ngram;
my $class = 'Grapheme::Ngram';
my @ngrams = $class->ngram($string,$width);
For many applications it's better to work along graphemes.
Building n-grams is one of them.
$object = Grapheme::Ngram->new();
my $array_ref = $object->ngram($string, $width);
$string ...... string of characters
$width ....... length of the resulting tokens. Default is 1.
$array_ref ... reference to array of ngram tokens
Returns one token with the unmodified $string if the number of graphemes in $string is lower than $width.
Returns an empty $array_ref if $string is empty or undef. NOTE: maybe this will be changed in future.
Defaults to length = 1 if $width is not an integer larger than 0.
my @ngram = $object->from_tokens(\@tokens, $width);
Same as ngram but takes tokens. This method is used by ngram.
This allows to use a custom tokenizer for e.g. treating 'sh' also as grapheme:
my @tokens = $string =~ m/(Sh|sh|\X)/g;
my @graphemes = $object->_tokenize($string);
This internal method splits $string into a list of graphemes.
http://github.com/wollmers/Grapheme-Ngram
Helmut Wollmersdorfer, helmut.wollmersdorfer@gmail.com
Copyright (C) 2014 by Helmut Wollmersdorfer
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.