Package com.clearnlp.experiment

Source Code of com.clearnlp.experiment.TopicAssigner

/**
* Copyright (c) 2009/09-2012/08, Regents of the University of Colorado
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
*    list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
*    this list of conditions and the following disclaimer in the documentation
*    and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
* Copyright 2012/09-2013/04, 2013/11-Present, University of Massachusetts Amherst
* Copyright 2013/05-2013/10, IPSoft Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*     http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.clearnlp.experiment;

import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.PrintStream;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.regex.Pattern;

import com.carrotsearch.hppc.IntOpenHashSet;
import com.clearnlp.dependency.DEPTree;
import com.clearnlp.io.FileExtFilter;
import com.clearnlp.reader.DEPReader;
import com.clearnlp.util.UTArray;
import com.clearnlp.util.UTInput;
import com.clearnlp.util.UTOutput;

public class TopicAssigner
{
  final Pattern P_SPACE = Pattern.compile(" ");
  final Pattern P_COLON = Pattern.compile(":");
  final Pattern P_UNDER = Pattern.compile("_");
 
  public TopicAssigner(String depDir, String tpcDir, int threshold) throws IOException
  {
    String depFile, tpcFile, outFile;
   
    for (String basename : new File(depDir).list(new FileExtFilter("dep.2")))
    {
      System.out.println(basename);
      depFile = depDir + File.separator + basename;
      tpcFile = tpcDir + File.separator + basename;
      outFile = depDir + File.separator + basename + ".tpc";
     
      assign(depFile, tpcFile, outFile, threshold);
    }
  }
 
  public void assign(String depFile, String tpcFile, String outFile, int threshold) throws IOException
  {
    List<List<String[]>> topics = getTopics(tpcFile, threshold);
    DEPReader reader = new DEPReader(0, 1, 2, 3, 4, 5, 6);
    reader.open(UTInput.createBufferedFileReader(depFile));
    PrintStream fout = UTOutput.createPrintBufferedFileStream(outFile);
    IntOpenHashSet[] sets;
    StringBuilder build;
    IntOpenHashSet set;
    int[] indices;
    DEPTree tree;
    int i, size;
   
    while ((tree = reader.next()) != null)
    {
      sets  = assignTopics(topics, tree);
      size  = sets.length;
      build = new StringBuilder();
     
      for (i=1; i<size; i++)
      {
        set = sets[i];
       
        if (set.isEmpty())
        {
          build.append("_");
        }
        else
        {
          indices = set.toArray();
          Arrays.sort(indices);
          build.append("tpc=");
          build.append(UTArray.join(indices, ","));
        }
       
        build.append("\n");
      }
     
      fout.println(build.toString());
    }
   
    fout.close();
  }
 
  private IntOpenHashSet[] assignTopics(List<List<String[]>> topics, DEPTree tree)
  {
    int nodeId, topicId, i, nSize = tree.size(), tSize = topics.size(), iSize;
    IntOpenHashSet[] sets = new IntOpenHashSet[nSize];
    boolean match;
   
    for (nodeId=1; nodeId<nSize; nodeId++)
      sets[nodeId] = new IntOpenHashSet();
   
    for (nodeId=1; nodeId<nSize; nodeId++)
    {
      for (topicId=0; topicId<tSize; topicId++)
      {
        for (String[] topic : topics.get(topicId))
        {
          iSize = topic.length;
          match = true;
         
          for (i=0; i<iSize; i++)
          {
            if (nodeId+i >= nSize || !tree.get(nodeId+i).form.toLowerCase().equals(topic[i]))
            {
              match = false;
              break;
            }
          }
         
          if (match)
          {
            for (i=0; i<iSize; i++)
              sets[nodeId+i].add(topicId);
          }
        }
      }
    }
   
    return sets;
  }
 
  public List<List<String[]>> getTopics(String tpcFile, int threshold) throws IOException
  {
    BufferedReader fin = UTInput.createBufferedFileReader(tpcFile);
    List<List<String[]>> topics = new ArrayList<List<String[]>>();
    List<String[]> topic;
    String[] tmp;
    String line;
   
    while ((line = fin.readLine()) != null)
    {
      topic = new ArrayList<String[]>();
     
      for (String item : P_SPACE.split(line))
      {
        tmp = P_COLON.split(item);
        if (tmp.length < 2continue;
       
        if (Integer.parseInt(tmp[1]) > threshold)
          topic.add(P_UNDER.split(tmp[0]));
      }
     
      if (!topic.isEmpty())
        topics.add(topic);
    }
   
    fin.close();
    return topics;
  }
 
  static public void main(String[] args)
  {
    try
    {
      new TopicAssigner(args[0], args[1], Integer.parseInt(args[2]));
    }
    catch (Exception e) {e.printStackTrace();}
  }
}
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