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.
    WARNING: This API is experimental and might change in incompatible ways in the next release.
    • 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 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