Package org.apache.lucene.search.similarities

Class BasicModelP

  • public class BasicModelP
extends BasicModel
    Implements the Poisson approximation for the binomial model for DFR.

    • Field Summary

      Fields 
      Modifier and Type Field Description
      protected static double LOG2_E
      log2(Math.E), precomputed.

    • Constructor Summary

      Constructors 
      Constructor Description
      BasicModelP()
      Sole constructor: parameter-free

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      float score​(BasicStats stats, float tfn)
      Returns the informative content score.
      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

    • Field Detail

      • LOG2_E

        protected static double LOG2_E
        log2(Math.E), precomputed.

    • Constructor Detail

      • BasicModelP

        public BasicModelP()
        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 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