Summarizr

Summarizr reads through source text and builds a list of significant keywords, then returns a shortened version of the article containing only the sections with the highest concentrations of these keywords. I have found that this method produces surprisingly good results despite its simplicity, particularly when most of the keywords are proper nouns (as tends to be true of news media articles).

Summarizr.summarize(long_article_as_string) #=> summarized_version

Add this line to your application's Gemfile:

gem 'summarizr'

And then execute:

$ bundle

Or install it yourself as:

$ gem install summarizr

The gem is available as open source under the terms of the MIT License.