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vralex/simple.rb

Created May 29, 2013 07:43
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Decision tree example using.
Raw
simple.rb
#!/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'],
]
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")
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