org.apache.lucene.search.similarities

Class BasicModelIn

java.lang.Object

org.apache.lucene.search.similarities.BasicModel

org.apache.lucene.search.similarities.BasicModelIn

public class BasicModelIn
extends BasicModel

The basic tf-idf model of randomness.

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

Constructor Summary

Constructors

Constructor and Description
BasicModelIn() Sole constructor: parameter-free

Method Summary

Methods

Modifier and Type	Method and Description
Explanation	explain(BasicStats stats, float tfn) Returns an explanation for the score.
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 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

BasicModelIn

public BasicModelIn()

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

explain

public final Explanation explain(BasicStats stats,
                  float tfn)

Description copied from class: BasicModel

Returns an explanation for the score.

Most basic models use the number of documents and the total term frequency to compute Inf₁. This method provides a generic explanation for such models. Subclasses that use other statistics must override this method.

Overrides:

explain 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