如何通过麻省理工学院JWI找到wordnet synset的衍生相关形式?

时间:2014-05-31 02:20:08

标签: java semantics jwi

当通过MIT Java Wordnet接口(JWI)检索Synset的语义关系时,我根本无法得到与派生相关的形式。我使用的是ISynset类方法getRelatedSynsets(IPointer p),但列表只返回空。

作为一个简单的测试,我开发了一个类,它迭代wordnet的所有名词同义词,并试图找到暴露衍生相关形式的任何synset。令人惊讶的是,代码无法找到具有该关系的单个synset。这是代码:

public class DerivationallyTest {

    private static IDictionary dict = null;

    public static void main(String[] args) throws IOException {
        IDictionary dict = dicitionaryFactory();
        Iterator<ISynset> it = dict.getSynsetIterator(POS.NOUN);
        while(it.hasNext()){
            ISynset synset = it.next();
            if(synset.getRelatedSynsets(Pointer.DERIVATIONALLY_RELATED).size() > 0){
                System.out.println("FOUND ONE!!!");
            }
        }
    }



    public static IDictionary dicitionaryFactory() throws IOException{
        if(dict == null){
            System.out.println("Instanciando Dicionario...");
            // construct the URL to the Wordnet dictionary directory
            String wnhome = System.getenv("WNHOME");
            String path = wnhome + File.separator + "dict"; 
            URL url = new URL("file", null, path);
            // construct the dictionary object and open it
            dict = new Dictionary(url); 
            dict.open();
        }
        return dict;
    }
}

我做错了什么或这是一个真正奇怪的行为?我已经开发了许多使用MIT JWI的课程,并且不想在经过大量工作后更换为另一个API。

我在Ubuntu 12 LTS下使用Wordnet 3.1和MIT JWI 2.2.3

更新:我也尝试使用Wordnet 3.0,同样的事情发生了。

2 个答案:

答案 0 :(得分:3)

只有语义指针附加到synsets。词汇指针只附加于单词。尝试:IWord.getRelatedWords(IPointer ptr)

http://projects.csail.mit.edu/jwi/api/edu/mit/jwi/item/ISynset.html#getRelatedSynsets(edu.mit.jwi.item.IPointer)

答案 1 :(得分:1)

正如@ethereous所指出的,似乎Pointer.DERIVATIONALLY_RELATED是一个词法指针,而其他像Pointer.HYPERNYM和Pointer.HOLONYM则是语义指针。我在这个问题上写的课应该重写为下面的课程。

public class DerivationallyTest {

    private static IDictionary dict = null;

    public static void main(String[] args) throws IOException {
        IDictionary dict = dicitionaryFactory();
        Iterator<ISynset> it = dict.getSynsetIterator(POS.NOUN);
        while(it.hasNext()){
            ISynset synset = it.next();
            //HERE COMES THE CHANGE!!!! (the ".getWords().get(0).getRelatedWords()")
            if(synset.getWords().get(0).getRelatedWords(Pointer.DERIVATIONALLY_RELATED).size()>0){
                System.out.println("FOUND ONE!!!");
            }
        }
    }



    public static IDictionary dicitionaryFactory() throws IOException{
        if(dict == null){
            System.out.println("Instanciando Dicionario...");
            // construct the URL to the Wordnet dictionary directory
            String wnhome = System.getenv("WNHOME");
            String path = wnhome + File.separator + "dict"; 
            URL url = new URL("file", null, path);
            // construct the dictionary object and open it
            dict = new Dictionary(url); 
            dict.open();
        }
        return dict;
    }
}