com.hankcs.hanlp.summary

Class TextRankKeyword

java.lang.Object

com.hankcs.hanlp.summary.KeywordExtractor

com.hankcs.hanlp.summary.TextRankKeyword

public class TextRankKeyword
extends KeywordExtractor

基于TextRank算法的关键字提取，适用于单文档

Author:

hankcs

Field Summary

Fields

Modifier and Type	Field and Description
static int	max_iter 最大迭代次数

Fields inherited from class com.hankcs.hanlp.summary.KeywordExtractor

defaultSegment

Constructor Summary

Constructors

Constructor and Description
TextRankKeyword()
TextRankKeyword(Segment defaultSegment)

Method Summary

Modifier and Type	Method and Description
List<String>	getKeyword(String content) Deprecated. 请使用 KeywordExtractor.getKeywords(java.lang.String)
static List<String>	getKeywordList(String document, int size) 提取关键词
List<String>	getKeywords(List<Term> termList, int size)
Map<String,Float>	getTermAndRank(List<Term> termList) 使用已经分好的词来计算rank
Map<String,Float>	getTermAndRank(String content) 返回全部分词结果和对应的rank
Map<String,Float>	getTermAndRank(String content, int size) 返回分数最高的前size个分词结果和对应的rank
static float	sigMoid(float value) sigmoid函数

Methods inherited from class com.hankcs.hanlp.summary.KeywordExtractor

filter, getKeywords, getKeywords, getSegment, setSegment, shouldInclude

Methods inherited from class java.lang.Object

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

Field Detail

max_iter

public static int max_iter

最大迭代次数

Constructor Detail

TextRankKeyword

public TextRankKeyword(Segment defaultSegment)

TextRankKeyword

public TextRankKeyword()

Method Detail

getKeywordList

public static List<String> getKeywordList(String document,
                                          int size)

提取关键词

Parameters:

document - 文档内容

size - 希望提取几个关键词

Returns:

一个列表

getKeyword

public List<String> getKeyword(String content)

Deprecated. 请使用 KeywordExtractor.getKeywords(java.lang.String)

提取关键词

Parameters:

content -

Returns:

getTermAndRank

public Map<String,Float> getTermAndRank(String content)

返回全部分词结果和对应的rank

Parameters:

content -

Returns:

getTermAndRank

public Map<String,Float> getTermAndRank(String content,
                                        int size)

返回分数最高的前size个分词结果和对应的rank

Parameters:

content -

size -

Returns:

getTermAndRank

public Map<String,Float> getTermAndRank(List<Term> termList)

使用已经分好的词来计算rank

Parameters:

termList -

Returns:

sigMoid

public static float sigMoid(float value)

sigmoid函数

Parameters:

value -

Returns:

getKeywords

public List<String> getKeywords(List<Term> termList,
                                int size)

Specified by:

getKeywords in class KeywordExtractor