org.apache.lucene.search.similarities
Class BasicModelG

java.lang.Object
  extended by org.apache.lucene.search.similarities.BasicModel
      extended by org.apache.lucene.search.similarities.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 Summary
BasicModelG()
          Sole constructor: parameter-free
 
Method Summary
 float score(BasicStats stats, float tfn)
          Returns the informative content score.
 String toString()
          Subclasses must override this method to return the code of the basic model formula.
 
Methods inherited from class org.apache.lucene.search.similarities.BasicModel
explain
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

BasicModelG

public BasicModelG()
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


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