Esempio n. 1
1
  public static synchronized Dictionary initializeWordNet() {

    if (wordnet != null) return wordnet;

    try {
      String propsFileText = FileUtils.readFile(Utils.class.getResourceAsStream(propsFile));
      Map<String, String> map = Maps.newTreeMap();
      map.put("WordNet_dictionary_path", Utils.getConfig().getString("WordNet_dictionary_path"));
      propsFileText = StringUtil.macroReplace(propsFileText, map);
      JWNL.initialize(new StringInputStream(propsFileText));
      // JWNL.initialize(new FileInputStream(propsFile));
      wordnet = Dictionary.getInstance();
    } catch (Exception ex) {
      throw new RuntimeException(ex);
    }

    SUPERTYPE_SYNSETS = new Synset[SUPERTYPES.length];
    Synset[] classSynset;
    IndexWord iw;
    int count = 0;
    for (String type : SUPERTYPES) {
      try {
        iw = wordnet.getIndexWord(POS.NOUN, type);
      } catch (JWNLException e) {
        throw new RuntimeException(e);
      }
      if (iw == null) {
        System.err.println(type);
        continue;
      }

      try {
        classSynset = iw.getSenses();
      } catch (JWNLException e) {
        throw new RuntimeException(e);
      }
      // System.err.println("**********************");
      if (classSynset.length > 1) {
        // for(Synset cs:classSynset)
        // System.err.println(cs);
        if (type.equals("abstraction")) {
          SUPERTYPE_SYNSETS[count] = classSynset[5];
        } else if (type.equals("measure")) {
          SUPERTYPE_SYNSETS[count] = classSynset[2];
        } else if (type.equals("state")) {
          SUPERTYPE_SYNSETS[count] = classSynset[3];
        } else if (type.equals("act")) {
          SUPERTYPE_SYNSETS[count] = classSynset[1];
        } else {
          SUPERTYPE_SYNSETS[count] = classSynset[0];
        }
      }
      count++;
    }
    if (wordnet == null) throw new RuntimeException("WordNet not intialized");
    else {
      System.out.println("Wordnet initialized " + wordnet);
    }
    return wordnet;
  }
  @Override
  public void run(Document doc, String annSetNames[]) {

    String tagChunk = currentConfig.getTagChunk();
    String listDir = currentConfig.getTagChunkLists();

    AnnotationSet namedEntities = new AnnotationSet(annSetNames[0]);

    // get the sentences from the input
    AnnotationSet sentSet = doc.getAnnotationSet(Constants.SENT);

    // get the tokens from each sentence
    AnnotationSet tokenSet = doc.getAnnotationSet(Constants.TOKEN);

    // Read in the text from the raw file
    String text = doc.getText();

    Iterator<Annotation> sents = sentSet.iterator();
    ArrayList<String> lines = new ArrayList<String>();
    ArrayList<Vector<Annotation>> tokenList = new ArrayList<Vector<Annotation>>();

    while (sents.hasNext()) {
      Vector<Annotation> annVector = new Vector<Annotation>();
      Annotation sent = sents.next();
      int sentStart = sent.getStartOffset();
      int sentEnd = sent.getEndOffset();
      String sentText = Annotation.getAnnotText(sent, text);
      AnnotationSet sentTokens = tokenSet.getContained(sentStart, sentEnd);

      // gather all sentences to tag
      if (!sentText.matches("\\W+")) {
        StringBuilder tmp = new StringBuilder();
        for (Annotation a : sentTokens) {
          tmp.append(Annotation.getAnnotTextClean(a, text)).append(" ");
          annVector.add(a);
        }

        lines.add(tmp.toString());
        tokenList.add(annVector);
      }
    }

    // write out a tmp file that contains the words to be tagged
    File tmpFile = new File(doc.getRootDir(), "tmp.ner");
    try {
      tmpFile.deleteOnExit();
      FileWriter fw = new FileWriter(tmpFile);
      BufferedWriter bw = new BufferedWriter(fw);
      for (String l : lines) {
        // System.out.println(l);
        bw.write(l + "\n");
      }

      bw.close();
      fw.close();
    } catch (IOException ioe) {
      ioe.printStackTrace();
    }

    // run the tagger
    String command =
        tagChunk
            + " -predict . "
            + modelDir
            + Utils.SEPARATOR
            + models[0]
            + " "
            + tmpFile.getAbsolutePath()
            + " "
            + listDir;

    // collect the results
    ArrayList<String> results;
    int i = 0;
    try {
      results = Utils.runExternalCaptureOutput(command);
      Annotation current = null;
      for (String l : results) {
        Vector<Annotation> annVector = tokenList.get(i);

        // get rid of these extraneous tags
        l = l.replace("_O-O", "");
        String[] tokens = l.split(" ");
        // System.out.println(l);

        int j = 0;
        int underscore;
        int nes = 1;
        String tag;
        for (String t : tokens) {
          underscore = t.lastIndexOf('_');
          tag = t.substring(underscore + 1, t.length());
          Annotation a = annVector.get(j);
          // System.out.print(Utils.getAnnotTextClean(a, text) + "_" + tag + " ");

          if (tag.equals("B-O")) {
            j++;
            if (current != null) {
              namedEntities.add(current);
              // System.out.println("NE Found: " + Utils.getAnnotTextClean(current, text) + ":" +
              // current.getType());
              nes++;
              current = null;
            }

            continue;
          }

          String entityType = tag.substring(tag.indexOf("-") + 1, tag.length());

          if (entityType.equals("ORG")) {
            entityType = "ORGANIZATION";
          } else if (entityType.equals("LOC")) {
            entityType = "LOCATION";
          } else if (entityType.equals("PER")) {
            entityType = "PERSON";
          } else if (entityType.equals("VEH")) {
            entityType = "VEHICLE";
          }

          if (tag.startsWith("B-")) {
            if (current != null) {
              namedEntities.add(current);
              nes++;
              current = null;
              // System.out.println("NE Found: " + Utils.getAnnotTextClean(current, text));
            }

            current = new Annotation(nes, a.getStartOffset(), a.getEndOffset(), entityType);
          } else if (tag.startsWith("I-")) {
            if (current != null) {
              current.setEndOffset(a.getEndOffset());
            } else {
              current = new Annotation(nes, a.getStartOffset(), a.getEndOffset(), entityType);
            }
          }

          j++;
        }

        // System.out.println();
        i++;
      }
      FileUtils.delete(tmpFile);
    } catch (IOException e) {
      throw new RuntimeException(e);
    } catch (InterruptedException e) {
      throw new RuntimeException(e);
    }

    addResultSet(doc, namedEntities);
  }