使用Stanford Coref的回指解析

问题描述

我有句子(文本I):

我想将第二句中的他更改为汤姆，因此最后一句话将变为(文本II):

I want to change He in the second sentence to Tom, so final sentences will become (Text II):

我写了一些代码，但是我的 coref 对象总是 null .
另外我不知道下一步该怎么做才能得到正确的结果.

I've wrote some code, but my coref object always null.
Besides I have no idea what to do next to get correct result.

    String text = "Tom is a smart boy. He know a lot of thing.";
    Annotation document = new Annotation(text);
    Properties props = new Properties();
    props.put("annotators", "tokenize, ssplit, pos, parse, lemma, ner, dcoref");
    StanfordCoreNLP pipeline = new StanfordCoreNLP(props);
    pipeline.annotate(document);

    List<Pair<IntTuple, IntTuple>> coref = document.get(CorefGraphAnnotation.class);

我想知道我做错了什么，接下来该怎么做才能从 Text I 中获得 Text II .
PS:我正在使用Stanford CoreNLP 1.3.0.

I want to know if I'm doing it wrong and what I should do next to get Text II from Text I.
PS: I'm using Stanford CoreNLP 1.3.0.

谢谢.

推荐答案

List<Pair<IntTuple, IntTuple>> coref = document.get(CorefGraphAnnotation.class);

这是旧的coref输出格式.

This is an old coref output format.

您可以将此行更改为

Map<Integer, CorefChain> graph = document.get(CorefChainAnnotation.class);

，或者您可以使用oldCorefFormat选项:

or you can use the oldCorefFormat option:

props.put("oldCorefFormat", "true");

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