# File lib/ai4r/genetic_algorithm/genetic_algorithm.rb, line 251
      def self.seed
        data_size = @@costs[0].length
        available = []
        0.upto(data_size-1) { |n| available << n }
        seed = []
        while available.length > 0 do 
          index = rand(available.length)
          seed << available.delete_at(index)
        end
        return Chromosome.new(seed)
      end