如何使用斯坦福解析器

Question

我下载了Stanford解析器2.0.5并使用了包中的Demo2.java源代码,但是在编译并运行程序之后,它有很多错误.我的计划的一部分是:

public class testStanfordParser {
/** Usage: ParserDemo2 [[grammar] textFile] */
  public static void main(String[] args) throws IOException {
    String grammar = args.length > 0 ? args[0] : "edu/stanford/nlp/models/lexparser/englishPCFG.ser.gz";
    String[] options = { "-maxLength", "80", "-retainTmpSubcategories" };
    LexicalizedParser lp = LexicalizedParser.loadModel(grammar, options);
    TreebankLanguagePack tlp = new PennTreebankLanguagePack();
    GrammaticalStructureFactory gsf = tlp.grammaticalStructureFactory();
 ...

错误是:

Loading parser from serialized file edu/stanford/nlp/models/lexparser/englishPCFG.ser.gz java.io.IOException: Unable to resolve edu/stanford/nlp/models/lexparser/englishPCFG.ser.gz" as either class path, filename or URL
at edu.stanford.nlp.io.IOUtils.getInputStreamFromURLOrClasspathOrFileSystem(IOUtils.java:408)
at edu.stanford.nlp.io.IOUtils.readStreamFromString(IOUtils.java:356)
at edu.stanford.nlp.parser.lexparser.LexicalizedParser.getParserFromSerializedFile(LexicalizedParser.java:594)
at edu.stanford.nlp.parser.lexparser.LexicalizedParser.getParserFromFile(LexicalizedParser.java:389)
at edu.stanford.nlp.parser.lexparser.LexicalizedParser.loadModel(LexicalizedParser.java:157)
at edu.stanford.nlp.parser.lexparser.LexicalizedParser.loadModel(LexicalizedParser.java:143)
at testStanfordParser.main(testStanfordParser.java:19).                                             Loading parser from text file edu/stanford/nlp/models/lexparser/englishPCFG.ser.gz Exception in thread "main" java.lang.NoSuchMethodError: edu.stanford.nlp.io.IOUtils.readerFromString(Ljava/lang/String;)Ljava/io/BufferedReader;
at edu.stanford.nlp.parser.lexparser.LexicalizedParser.getParserFromTextFile(LexicalizedParser.java:528)
at edu.stanford.nlp.parser.lexparser.LexicalizedParser.getParserFromFile(LexicalizedParser.java:391)
at edu.stanford.nlp.parser.lexparser.LexicalizedParser.loadModel(LexicalizedParser.java:157)
at edu.stanford.nlp.parser.lexparser.LexicalizedParser.loadModel(LexicalizedParser.java:143)
at testStanfordParser.main(testStanfordParser.java:19)

请帮我解决一下.谢谢

Answer 1

我正在使用斯坦福解析器来提取名称、位置、组织等实体。

这是我的代码：

public class stanfrdIntro {

    public static void main(String[] args) throws IOException, SAXException,
  {

        String serializedClassifier = "classifiers/english.all.3class.distsim.crf.ser.gz";


        AbstractSequenceClassifier<CoreLabel> classifier = CRFClassifier
                .getClassifierNoExceptions(serializedClassifier);

       String s1 = "Good afternoon Rahul Kulhari, how are you today?";

       s1 = s1.replaceAll("\\s+", " ");
       String  t=classifier.classifyWithInlineXML(s1);
    System.out.println(Arrays.toString(getTagValues(t).toArray()));

    }
       private static final Pattern TAG_REGEX = Pattern.compile("<PERSON>(.+?)</PERSON>");

private static Set<String> getTagValues(final String str) {
    final Set<String> tagValues = new HashSet<String>();
    //final Set<String> tagValues = new TreeSet();
    final Matcher matcher = TAG_REGEX.matcher(str);
    while (matcher.find()) {
        tagValues.add(matcher.group(1));
    }

    return tagValues;
}

这可能对您有帮助，但我只提取实体。