[acts_as_searchable](http://rubyforge.org/projects/ar-searchable) is one of the most useful plugins which's enabling us to add a fulltext search feature to our models/resources easily. Unfortunately, it is lacking an interface to the features of searching by similarity provided by [HyperEstraier](http://hyperestraier.sourceforge.net/). So I wrote some codes to add an interface to exploit it. This is [acts\_as\_searchable\_with\_similarity](http://agilewebdevelopment.com/plugins/acts_as_searchable_with_similarity). **How to use?** Here is an example. **app/models/article.rb** rails>> class Article < ActiveRecord::Base acts_as_searchable end Article.similarity_search(target_article, :limit => 5) <<-- rails plugin search english 0 2007-11-29T23:37:26+00:00 245 blue_stole 232 6 2007-11-29T23:37:00+00:00 9a33be64-44ee-4bc9-b411-2ea2f404dc1e 2008-10-22T20:08:39+00:00 1