# File lib/ai4r/classifiers/naive_bayes.rb, line 62
      def initialize
        @m = 0
        @class_counts = []
        @class_prob = [] # stores the probability of the classes
        @pcc = [] # stores the number of instances divided into attribute/value/class
        @pcp = [] # stores the conditional probabilities of the values of an attribute
        @klass_index = {} # hashmap for quick lookup of all the used klasses and their indice
        @values = {} # hashmap for quick lookup of all the values
      end