java - 如何使用西类牙语模型在斯坦福解析器中获取 NP 和 VP 子树

Question

实际上，我使用 Java 从西类牙语文本中提取三元组。我需要提取 NP-VP-NP 形式的三元组。我也在使用斯坦福解析器 CoreNLP v 3.7.0 和西类牙语模型 v 3.7.0。接下来我的问题是，有没有办法从西类牙语模型的句子中提取 NP 子树和 VP 子树？我意识到西类牙语解析器树形式与英语形式不同。

例如:

(ROOT (句子 (sn (spec (da0000 El)) (grup.nom (nc0s000 reino))) (grup.verb (vmm0000 canta) (sadv (spec (rg muy)) (grup.adv (rg bien))) (fp .)))

Answer 1

您应该使用主要发行版来确保您拥有一切并下载西类牙模型

(可在此处获取:http://stanfordnlp.github.io/CoreNLP/download.html)

package edu.stanford.nlp.examples;

import edu.stanford.nlp.ling.*;
import edu.stanford.nlp.pipeline.*;
import edu.stanford.nlp.trees.*;
import edu.stanford.nlp.trees.tregex.*;
import edu.stanford.nlp.util.*;

import java.util.*;


public class TregexExample {

  public static void main(String[] args) {
    // set up pipeline
    Properties props = StringUtils.argsToProperties("-props", "StanfordCoreNLP-spanish.properties");
    StanfordCoreNLP pipeline = new StanfordCoreNLP(props);
    // Spanish example
    Annotation spanishDoc = new Annotation("...insert Spanish text...");
    pipeline.annotate(spanishDoc);
    // get first sentence
    CoreMap firstSentence = spanishDoc.get(CoreAnnotations.SentencesAnnotation.class).get(0);
    Tree firstSentenceTree = firstSentence.get(TreeCoreAnnotations.TreeAnnotation.class);
    // use Tregex to match
    String nounPhrasePattern = "/grup\\.nom/";
    TregexPattern nounPhraseTregexPattern = TregexPattern.compile(nounPhrasePattern);
    TregexMatcher nounPhraseTregexMatcher = nounPhraseTregexPattern.matcher(firstSentenceTree);
    while (nounPhraseTregexMatcher.find()) {
      nounPhraseTregexMatcher.getMatch().pennPrint();
    }
  }
}