Class SmartChineseAnalyzer

SmartChineseAnalyzer is an analyzer for Chinese or mixed Chinese-English text. The analyzer uses probabilistic knowledge to find the optimal word segmentation for Simplified Chinese text. The text is first broken into sentences, then each sentence is segmented into words.

Segmentation is based upon the Hidden Markov Model. A large training corpus was used to calculate Chinese word frequency probability.

This analyzer requires a dictionary to provide statistical data. SmartChineseAnalyzer has an included dictionary out-of-box.

The included dictionary data is from ICTCLAS1.0. Thanks to ICTCLAS for their hard work, and for contributing the data under the Apache 2 License!

This is a Lucene.NET EXPERIMENTAL API, use at your own risk
Inheritance
System.Object
Analyzer
SmartChineseAnalyzer
Inherited Members
Lucene.Net.Analysis.Analyzer.NewAnonymous(Func<, , >)
Lucene.Net.Analysis.Analyzer.NewAnonymous(Func<, , >, Lucene.Net.Analysis.ReuseStrategy)
Lucene.Net.Analysis.Analyzer.NewAnonymous(Func<, , >, Func<, , >)
Lucene.Net.Analysis.Analyzer.NewAnonymous(Func<, , >, Func<, , >, Lucene.Net.Analysis.ReuseStrategy)
Namespace: Lucene.Net.Analysis.Cn.Smart
Assembly: Lucene.Net.Analysis.SmartCn.dll
Syntax
public sealed class SmartChineseAnalyzer : Analyzer

Constructors

| Improve this Doc View Source

SmartChineseAnalyzer(LuceneVersion)

Create a new SmartChineseAnalyzer, using the default stopword list.

Declaration
public SmartChineseAnalyzer(LuceneVersion matchVersion)
Parameters
Type Name Description
LuceneVersion matchVersion
| Improve this Doc View Source

SmartChineseAnalyzer(LuceneVersion, CharArraySet)

Create a new SmartChineseAnalyzer, using the provided CharArraySet of stopwords.

Note: the set should include punctuation, unless you want to index punctuation!

Declaration
public SmartChineseAnalyzer(LuceneVersion matchVersion, CharArraySet stopWords)
Parameters
Type Name Description
LuceneVersion matchVersion
CharArraySet stopWords

CharArraySet of stopwords to use.
| Improve this Doc View Source

SmartChineseAnalyzer(LuceneVersion, Boolean)

Create a new SmartChineseAnalyzer, optionally using the default stopword list.

The included default stopword list is simply a list of punctuation. If you do not use this list, punctuation will not be removed from the text!

Declaration
public SmartChineseAnalyzer(LuceneVersion matchVersion, bool useDefaultStopWords)
Parameters
Type Name Description
LuceneVersion matchVersion
System.Boolean useDefaultStopWords

true to use the default stopword list.

Methods

| Improve this Doc View Source

CreateComponents(String, TextReader)

Declaration
protected override TokenStreamComponents CreateComponents(string fieldName, TextReader reader)
Parameters
Type Name Description
System.String fieldName
TextReader reader
Returns
Type Description
TokenStreamComponents
| Improve this Doc View Source

GetDefaultStopSet()

Returns an unmodifiable instance of the default stop-words set.

Declaration
public static CharArraySet GetDefaultStopSet()
Returns
Type Description
CharArraySet

An unmodifiable instance of the default stop-words set.