keyphrase.rb

# -*- encoding: utf-8 -*-
require 'rexml/document'
require 'net/http'

class Keyphrase
  def initialize
     path = File.join(File.dirname(__FILE__), "..", "config", "yahooapis.yml") 
     config = YAML::load(File.open(path))
     @app_id = config['app_id']
  end

  def split(text)

	 host = 'jlp.yahooapis.jp'
	 request = "/KeyphraseService/V1/extract?appid=#{@app_id}"

	 http = Net::HTTP.new(host)
	 response = http.post(request, "sentence=#{text}")

	 result = {}
	 xml = REXML::Document.new response.body
	 xml.elements.each("/ResultSet/Result") do |item|
		key = item.elements['Keyphrase'].text
		v = item.elements['Score'].text
		result[key] = v
	 end
    result
  end

end