Class BasicModelBE

  • public class BasicModelBE
    extends BasicModel
    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 tfn+1 and N is increased by F
    WARNING: This API is experimental and might change in incompatible ways in the next release.
    NOTE: in some corner cases this model may give poor performance or infinite scores with Normalizations that return large or small values for tfn such as NormalizationH3. Consider using the geometric approximation (BasicModelG) instead, which provides the same relevance but with less practical problems.
    • Constructor Detail

      • BasicModelBE

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

      • score

        public final float score​(BasicStats stats,
                                 float tfn)
        Description copied from class: BasicModel
        Returns the informative content score.
        Specified by:
        score 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