#!/usr/bin/ruby

require "rubygems"
require "decisiontree"

attributes = ["Temperature"]
training = [
  [36.6, "healthy"],
  [37, "sick"],
  [38, "sick"],
  [36.7, "healthy"],
  [40, "sick"],
  [50, "really sick"]
]

# Instantiate the tree, and train it based on the data (set default to '1')
dec_tree = DecisionTree::ID3Tree.new(attributes, training, "sick", :continuous)
dec_tree.train

test = [37, "sick"]

decision = dec_tree.predict(test)
puts "Predicted: #{decision} ... True decision: #{test.last}"

# Graph the tree, save to 'tree.png'
dec_tree.graph("tree")