org.apache.lucene.search.similarities
Class LMSimilarity.DefaultCollectionModel

java.lang.Object
  org.apache.lucene.search.similarities.LMSimilarity.DefaultCollectionModel

All Implemented Interfaces:

LMSimilarity.CollectionModel

Enclosing class:

LMSimilarity

public static class LMSimilarity.DefaultCollectionModel
extends Object
implements LMSimilarity.CollectionModel

Models p(w|C) as the number of occurrences of the term in the collection, divided by the total number of tokens + 1.

Constructor Summary

LMSimilarity.DefaultCollectionModel()
Sole constructor: parameter-free

Method Summary

float	computeProbability(BasicStats stats) Computes the probability p(w|C) according to the language model strategy for the current term.
String	getName() The name of the collection model strategy.

Methods inherited from class java.lang.Object

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

Constructor Detail

LMSimilarity.DefaultCollectionModel

public LMSimilarity.DefaultCollectionModel()

Sole constructor: parameter-free

Method Detail

computeProbability

public float computeProbability(BasicStats stats)

Description copied from interface: LMSimilarity.CollectionModel

Computes the probability p(w|C) according to the language model strategy for the current term.

Specified by:

computeProbability in interface LMSimilarity.CollectionModel

getName

public String getName()

Description copied from interface: LMSimilarity.CollectionModel

The name of the collection model strategy.

Specified by:

getName in interface LMSimilarity.CollectionModel