Method: EvoSynth::Problems::FloatBenchmarkFuntions.rastgrin

Defined in:

lib/evosynth/problems/float_benchmark_functions.rb

.rastgrin(xs) ⇒ Object

Rastgrin (Törn & Zilinskas 1989)

global minimum: f(x) = 0 at x(i) = 0, i = 1..n

# File 'lib/evosynth/problems/float_benchmark_functions.rb', line 63

def FloatBenchmarkFuntions.rastgrin(xs)
  10 * xs.size + xs.inject(0.0) { |sum, x| sum += x**2 - 10 * Math.cos(2 * Math::PI * x) }
end