File Coverage

blib/lib/Bag/Similarity/Jaccard.pm

Criterion	Covered	Total	%
statement	16	16	100.0
branch			n/a
condition			n/a
subroutine	5	5	100.0
pod	1	1	100.0
total	22	22	100.0

package Bag::Similarity::Jaccard;

use strict;
use warnings;

use parent 'Bag::Similarity';
use Bag::Similarity::Dice;

our $VERSION = '0.021';

sub from_bags {
  my ($self, $set1, $set2) = @_;

  my $intersection = $self->intersection($set1,$set2);
  my $union = $self->combined_length($set1,$set2) - $intersection;
  # ( A intersect B ) / (A union B)
  return ($intersection / $union);
}



1;


__END__