class Rastrigin
Public Instance Methods
evaluate(x_values)
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@param x_values [Array<Float>] @return Float
# File lib/gimuby/problem/rastrigin/rastrigin.rb, line 6 def evaluate(x_values) a = get_a value = a * x_values.length x_values.each do |x_i| cos_arg = 2.0 * Math::PI * x_i sum_term_1 = (x_i ** 2.0) sum_term_2 = a * Math::cos(cos_arg) value += sum_term_1 - sum_term_2 end value end
Protected Instance Methods
get_a()
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A Rastrigin
parameter @return Float
# File lib/gimuby/problem/rastrigin/rastrigin.rb, line 22 def get_a 10.0 end