# File lib/ai4r/classifiers/hyperpipes.rb, line 30 def build(data_set) data_set.check_not_empty @data_set = data_set @domains = data_set.build_domains @pipes = {} @domains.last.each {|cat| @pipes[cat] = build_pipe(@data_set)} @data_set.data_items.each {|item| update_pipe(@pipes[item.last], item) } return self end