org.wltea.analyzer.lucene

Class IKSimilarity

java.lang.Object

org.apache.lucene.search.Similarity

org.apache.lucene.search.DefaultSimilarity

org.wltea.analyzer.lucene.IKSimilarity

All Implemented Interfaces:

Serializable

public class IKSimilarity
extends org.apache.lucene.search.DefaultSimilarity

IK Analyzer v3.2 相似度评估器 重载了DefaultSimilarity的coord方法 提高词元命中个数在相似度比较中的权重影响，即，当有多个词元得到匹配时，文档的相似度将提高

Author:

林良益

See Also:

Serialized Form

Field Summary

Fields inherited from class org.apache.lucene.search.DefaultSimilarity

discountOverlaps

Fields inherited from class org.apache.lucene.search.Similarity

NO_DOC_ID_PROVIDED

Constructor Summary

Constructors

Constructor and Description
IKSimilarity()

Method Summary

Modifier and Type	Method and Description
float	coord(int overlap, int maxOverlap)

Methods inherited from class org.apache.lucene.search.DefaultSimilarity

computeNorm, getDiscountOverlaps, idf, lengthNorm, queryNorm, setDiscountOverlaps, sloppyFreq, tf

Methods inherited from class org.apache.lucene.search.Similarity

decodeNorm, encodeNorm, getDefault, getNormDecoder, idfExplain, idfExplain, scorePayload, setDefault, tf

Methods inherited from class java.lang.Object

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

Constructor Detail

IKSimilarity

public IKSimilarity()

Method Detail

coord

public float coord(int overlap,
                   int maxOverlap)

Overrides:

coord in class org.apache.lucene.search.DefaultSimilarity