# File lib/ai4r/clusterers/bisecting_k_means.rb, line 78
      def find_biggest_cluster_index(clusters)
        max_index = 0
        max_length = 0
        clusters.each_index do |cluster_index|
          cluster = clusters[cluster_index]
          if max_length < cluster.data_items.length
            max_length = cluster.data_items.length
            max_index = cluster_index
          end
        end
        return max_index
      end