java lucene词干提取_lucene 进行去除停用词和词干提取
时间: 2024-01-15 10:03:22 浏览: 167
基于lucene的去词、禁词、搜索等操作
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对于Java Lucene进行去除停用词和词干提取,可以使用以下步骤:
1. 导入Lucene库
```
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.core.StopAnalyzer;
import org.apache.lucene.analysis.en.PorterStemFilter;
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.analysis.tokenattributes.CharTermAttribute;
import org.apache.lucene.util.Version;
```
2. 定义分析器(Analyzer),包括使用StandardAnalyzer进行分词,使用StopAnalyzer去除停用词(如a,an,the等),使用PorterStemFilter进行词干提取。
```
Analyzer analyzer = new StopAnalyzer(Version.LATEST);
analyzer = new StandardAnalyzer(Version.LATEST);
analyzer = new Analyzer.TokenStreamComponents(tokenizer, new PorterStemFilter(tokenizer)).getTokenStream();
```
3. 定义文本输入,并将其传入分析器进行分析,获取分析结果。
```
String text = "This is a sample text to demonstrate Lucene's stop words removal and stemming capabilities.";
TokenStream tokenStream = analyzer.tokenStream(null, new StringReader(text));
CharTermAttribute charTermAttribute = tokenStream.addAttribute(CharTermAttribute.class);
tokenStream.reset();
while (tokenStream.incrementToken()) {
System.out.println(charTermAttribute.toString());
}
```
运行以上代码,即可得到去除停用词和进行词干提取后的文本分词结果。
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