NAME
    Set::Similarity::CosinePP - Cosine similarity for sets pure Perl vector
    implementation

    <a href="https://travis-ci.org/wollmers/Set-Similarity-CosinePP"><img
    src="https://travis-ci.org/wollmers/Set-Similarity-CosinePP.png"
    alt="Set-Similarity-CosinePP"></a> <a
    href='https://coveralls.io/r/wollmers/Set-Similarity-CosinePP?branch=mas
    ter'><img
    src='https://coveralls.io/repos/wollmers/Set-Similarity-CosinePP/badge.p
    ng?branch=master' alt='Coverage Status' /></a>

SYNOPSIS
     use Set::Similarity::CosinePP;
 
     # object method
     my $cosine = Set::Similarity::CosinePP->new;
     my $similarity = $cosine->similarity('Photographer','Fotograf');

DESCRIPTION
  Cosine similarity
    A intersection B / (sqrt(A) * sqrt(B))

METHODS
    Set::Similarity::CosinePP inherits all methods from Set::Similarity and
    implements the following new ones.

  from_sets
      my $similarity = $object->from_sets(['a'],['b']);

    This method expects two arrayrefs of strings as parameters. The
    parameters are not checked, thus can lead to funny results or uncatched
    divisions by zero.

    If you want to use this method directly, you should take care that the
    elements are unique. Also you should catch the situation where one of
    the arrayrefs is empty (similarity is 0), or both are empty (similarity
    is 1).

SOURCE REPOSITORY
    <http://github.com/wollmers/Set-Similarity-CosinePP>

AUTHOR
    Helmut Wollmersdorfer, <helmut.wollmersdorfer@gmail.com>

COPYRIGHT AND LICENSE
    Copyright (C) 2013-2014 by Helmut Wollmersdorfer

    This library is free software; you can redistribute it and/or modify it
    under the same terms as Perl itself.