TL上の助詞と接続詞を取っ払うやつ（便利じゃない)

shoujou.rb

# -*- coding: utf-8 -*-
# shoujou filter
#
require 'natto'

Earthquake.init do

  output_filter do |item|
    next if item.nil? || item["text"].nil?
    nm = Natto::MeCab.new
    words = nm.parse(item["text"]).split(/\r*\n/)
    item["text"] =  words.inject(""){|s,e|
      a = e.split(/\t/)
      s << a[0] unless /(助詞|接続詞)/ =~ a[1] || a[0] == 'EOS'
      s
    }
    true
  end
end