Class BasicModelG


  • public class BasicModelG
    extends BasicModel
    Geometric as limiting form of the Bose-Einstein model. The formula used in Lucene differs slightly from the one in the original paper: F is increased by 1 and N is increased by F.
    • Constructor Summary

      Constructors 
      Constructor Description
      BasicModelG()
      Sole constructor: parameter-free
    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      Explanation explain​(BasicStats stats, double tfn, double aeTimes1pTfn)
      Returns an explanation for the score.
      double score​(BasicStats stats, double tfn, double aeTimes1pTfn)
      Returns the informative content score combined with the after effect, more specifically informationContentScore * aeTimes1pTfn / (1 + tfn).
      java.lang.String toString()
      Subclasses must override this method to return the code of the basic model formula.
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
    • Constructor Detail

      • BasicModelG

        public BasicModelG()
        Sole constructor: parameter-free
    • Method Detail

      • score

        public final double score​(BasicStats stats,
                                  double tfn,
                                  double aeTimes1pTfn)
        Description copied from class: BasicModel
        Returns the informative content score combined with the after effect, more specifically informationContentScore * aeTimes1pTfn / (1 + tfn). This function must be non-decreasing with tfn.
        Specified by:
        score in class BasicModel
      • explain

        public Explanation explain​(BasicStats stats,
                                   double tfn,
                                   double aeTimes1pTfn)
        Description copied from class: BasicModel
        Returns an explanation for the score. Subclasses must override this method.
        Specified by:
        explain in class BasicModel
      • toString

        public java.lang.String toString()
        Description copied from class: BasicModel
        Subclasses must override this method to return the code of the basic model formula. Refer to the original paper for the list.
        Specified by:
        toString in class BasicModel