FANN テスト

fann-test.rb

require 'ruby-fann'

inputs = 0.step(Math::PI * 2, 0.01).map { |x| [x] }
desired_outputs = inputs.map { |i| [Math.sin(i.first)] }
train = RubyFann::TrainData.new(inputs: inputs, desired_outputs: desired_outputs)
fann = RubyFann::Standard.new(:num_inputs=>1, :hidden_neurons=>[10, 20], :num_outputs=>1)
fann.set_activation_function_hidden(:sigmoid_symmetric)
fann.set_activation_function_output(:sigmoid_symmetric)
fann.train_on_data(train, 2000, 20, 0.001)

inputs.map(&:first).map { |i| [i, Math.sin(i), fann.run([i]).first] }.map { |a| a.concat [a[1] - a[2]] }