# File lib/ai4r/clusterers/single_linkage.rb, line 168 def get_closest_clusters(index_clusters) min_distance = 1.0/0 closest_clusters = [1, 0] index_clusters.each_index do |index_a| index_a.times do |index_b| cluster_distance = read_distance_matrix(index_a, index_b) if cluster_distance < min_distance closest_clusters = [index_a, index_b] min_distance = cluster_distance end end end return closest_clusters end