otobrglez

# This method finds related articles using Jaccard index (optimized for PostgreSQL).
# More info: http://en.wikipedia.org/wiki/Jaccard_index

class Article < ActiveRecord::Base

  def related(limit=10)
    Article.find_by_sql(%Q{
      SELECT
      	a.*,
      	( SELECT array_agg(t.name) FROM taggings tg, tags t

josiahcarlson

'''
redis_search.py

Written by Josiah Carlson July 3, 2010

Released into the public domain.


This module implements a simple TF/IDF indexing and search algorithm using
Redis as a datastore server.  The particular algorithm implemented uses the

larsch

LUAOBJECT_GRAMMAR = %q{
grammar LuaObject

  rule luaobj
    space value space { def to_ruby; value.to_ruby; end }
  end

  rule value
    nil / float / number / string / table / boolean
  end