http://lucene.apache.org/lucene-parent/lucene-core: Apache Lucene Java Core (The Apache Software Foundation) 
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package org.apache.lucene.search.similarities;



Saturated measure of distance from independence


Described as:
"for tasks that require high recall against long queries"

@lucene.experimental
/**
 * Saturated measure of distance from independence
 * <p>
 * Described as:
 * "for tasks that require high recall against long queries"
 * @lucene.experimental
 */
public class IndependenceSaturated extends Independence {

  
Sole constructor.

/**
   * Sole constructor.
   */
  public IndependenceSaturated() {}
  
  @Override
  public double score(double freq, double expected) {
    return (freq - expected) / expected;
  }

  @Override
  public String toString() {
    return "Saturated";
  }
}