Skip to content


Subversion checkout URL

You can clone with
Download ZIP
Branch: master


latest commit a80c110fa4
@ssoper authored


Summarize - A Ruby C wrapper for Open Text Summarizer



gem install summarize


git clone
cd summarize
rake build
gem build summarize.gemspec
gem install summarize-1.0.4.gem


The summarize method is added to File which you can use to summarize the contents of any plain text file'path/to/file').summarize

Or use the String method

"text to summarize".summarize

By default it uses an English dictionary for summarizing but forty languages are supported. Pass in the valid ISO 639 language code to use one. A ratio (default is 25%) can also be passed in.

# Parse an article using Portuguese stemming rules with a ratio of 50%
"texto para sumariar".summarize(:language => 'pt', :ratio => 50)

You can also use custom stemming rules

"text to summarize".summarize(:dictionary => 'path/to/custom/dictionary')

Topics can also be returned

# Returns an array with content first and topics second
content, topics = "text to summarize".summarize(:topics => true)
# content => summarized text
# topics  => Comma-delimited string of topics


You must have glib-2.0 and libxml-2.0 installed and properly configured.


Gem written by Sean Soper (@ssoper)

The Open Text Summarizer library was written by Nadav Rotem and can be found at

Gem fixed to handle UTF-8 encoding by Yury Batenko (@svenyurgensson)


Copyright (C) 2010 Sean Soper

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

Something went wrong with that request. Please try again.