Class Normalization

    • Constructor Detail

      • Normalization

        public Normalization()
        Sole constructor. (For invocation by subclass constructors, typically implicit.)
    • Method Detail

      • tfn

        public abstract double tfn​(BasicStats stats,
                                   double tf,
                                   double len)
        Returns the normalized term frequency.
        len - the field length.
      • explain

        public Explanation explain​(BasicStats stats,
                                   double tf,
                                   double len)
        Returns an explanation for the normalized term frequency.

        The default normalization methods use the field length of the document and the average field length to compute the normalized term frequency. This method provides a generic explanation for such methods. Subclasses that use other statistics must override this method.

      • toString

        public abstract String toString()
        Subclasses must override this method to return the code of the normalization formula. Refer to the original paper for the list.
        toString in class Object