Question

我尝试使用斯坦福解析器解析一个句子，但我得到了异常。输入文件，代码和异常如下所示。

我认为问题是因为输入文件中的penn树不处理标点符号。如何生成处理标点符号的penn树？

输入文件

(ROOT
  (S
    (NP (DT A) (NN doctor) (NN investigation) (NN system) (NN (DIS)))
    (VP (VBZ is)
      (NP
        (NP (DT a) (NN part))
        (PP (IN of)
          (NP (DT a) (NN hospital) (NN information) (NN system) (NN (HIS).)))))))

码

            String str="-collapsed -treeFile temp.txt";
            String ar[]=str.split(" ");
            edu.stanford.nlp.trees.EnglishGrammaticalStructure.main(ar);

             try {
                FileOutputStream fw = new FileOutputStream("k.txt");
                PrintStream out = new PrintStream(fw);
                System.setOut(out);



            } catch (Exception e) {
                System.out.print(e);
            }

提出异常：

Head is null: NN-37
Exception in thread "main" java.lang.IllegalArgumentException: governor or dependent cannot be null
        at edu.stanford.nlp.trees.UnnamedDependency.<init>(UnnamedDependency.java:105)
        at edu.stanford.nlp.trees.TreeGraphNode.dependencies(TreeGraphNode.java:519)
        at edu.stanford.nlp.trees.Tree.dependencies(Tree.java:1090)
        at edu.stanford.nlp.trees.GrammaticalStructure.<init>(GrammaticalStructure.java:71)
        at edu.stanford.nlp.trees.EnglishGrammaticalStructure.<init>(EnglishGrammaticalStructure.java:115)
        at edu.stanford.nlp.trees.EnglishGrammaticalStructure.<init>(EnglishGrammaticalStructure.java:89)
        at edu.stanford.nlp.trees.EnglishGrammaticalStructure.<init>(EnglishGrammaticalStructure.java:61)
        at edu.stanford.nlp.trees.EnglishGrammaticalStructure.<init>(EnglishGrammaticalStructure.java:53)

Answer 1

无用的错误消息，但这是因为输入树格式错误：到最后有一个迷路期。树应该是一个结构良好的s表达式。

Stanford Parser的非法论证异常

1 个答案: