Compare text similarity

liuweichuan has asked for the wisdom of the Perl Monks concerning the following question:

Replies are listed 'Best First'.
Re: Compare text similarity by Discipulus (Canon) on Feb 07, 2017 at 08:12 UTC
levenshtein distance is the keyword. Search here at PM and on CPAN to see examples and modules. L* There are no rules, there are no thumbs.. Reinvent the wheel, then learn The Wheel; may be one day you reinvent one of THE WHEELS.	[reply] [d/l]
Re: Compare text similarity by kcott (Archbishop) on Feb 07, 2017 at 08:23 UTC
G'day liuweichuan, "which modules or functions for comparing text similarity by perl" That's extremely vague! What sort of text? What format? What type of comparison? What else can you tell us that will help us to help you? There are operators, such as `cmp`: see perlop. There are regular expressions: see perlre. There are all sorts of string-related functions: see Perl functions A-Z. There are any number of builtin modules that might be useful: see the "Modules" section of http://perldoc.perl.org/perl.html. Then there's CPAN. Try searching: http://search.cpan.org/. I found these fairly quickly: Text::Compare; Text::Similarity; Text::Soundex. — Ken	[reply] [d/l]
Re^2: Compare text similarity by liuweichuan (Acolyte) on Feb 08, 2017 at 02:37 UTC
compare two texts/content is the similar or not, such as "i like this book" and "i like the book", they are same, and very similar.	[reply]
Re^2: Compare text similarity by liuweichuan (Acolyte) on Feb 08, 2017 at 03:03 UTC
like text::compare , but no support jp and zh char-set.	[reply]
Re: Compare text similarity by ablanke (Monsignor) on Feb 07, 2017 at 08:26 UTC
I would recommend String::Similarity.	[reply]
Re: Compare text similarity by madtoperl (Hermit) on Feb 07, 2017 at 10:41 UTC
Data::Compare You can look into below link for more details, http://perl.mines-albi.fr/perl5.8.5/site_perl/5.8.5/Data/Compare.html	[reply]
Re^2: Compare text similarity by marto (Cardinal) on Feb 07, 2017 at 10:46 UTC
Data::Compare will tell you if data structures are identical, not similar as OP mentioned. Take a look at some of the existing responses for recommendations.	[reply]