我试图从句子中提取名词短语.我正在使用opennlp librari“en-parser-chunking.bin”.
代码示例:
ArrayList<opennlp.tools.parser.Parse> nounPhrases = new ArrayList<>();
searchmethod("what is the nickname of the British flag?");
for(int t =0; t<50; t++)
{
str= text.get(t);
InputStream is = new FileInputStream("en-parser-chunking.bin");
ParserModel model = new ParserModel(is);
opennlp.tools.parser.Parser parser = ParserFactory.create(model);
opennlp.tools.parser.Parse[] topParses = ParserTool.parseLine(str, parser, 1);
for (opennlp.tools.parser.Parse p : topParses){
p.show();
if (p.getType().equals("NP")) {
nounPhrases.add(p);
}
}
}
使用此代码,我得到以下结果:
(TOP (S (NP (NP (DT The) (NN nickname)) (PP (IN for) (NP (DT the) (JJ British) (NN flag)))) (VP (VBZ is) (NP (NP (DT the) (NNP Union) (NNP Jack.)) (SBAR (IN Although) (S (NP (PRP it)) (VP (VBZ is) (ADVP (RB only) (RB correctly)) (VP (VBN kNown) (PP (IN as) (NP (DT this) (NN when) (NN flown))) (PP (IN on) (NP (DT a) (NN ship.)))))))))))
如何从该结果中提取名词短语?
任何帮助将不胜感激.
解决方法:
您可以从中提取NP,但是在http://opennlp.sourceforge.net/models-1.5/en-chunker.bin处有一个模型只进行分块(即名词短语检测),没有语法.这可能更容易使用(但它需要标记化和POS标记步骤才能运行).