Package org.apache.lucene.search.similarities

Class IndependenceStandardized

java.lang.Object
org.apache.lucene.search.similarities.Independence
org.apache.lucene.search.similarities.IndependenceStandardized
public class IndependenceStandardized extends Independence
Standardized measure of distance from independence

Described as: "good at tasks that require high recall and high precision, especially against short queries composed of a few words as in the case of Internet searches"

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

  • Constructor Details

    • IndependenceStandardized

      public IndependenceStandardized()
      Sole constructor.

  • Method Details

    • score

      public double score(double freq, double expected)
      Description copied from class: Independence
      Computes distance from independence
      Specified by:
      score in class Independence
      Parameters:
      freq - actual term frequency
      expected - expected term frequency

    • toString

      public String toString()
      Specified by:
      toString in class Independence