/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 opennlp.tools.cmdline.coref;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import opennlp.tools.cmdline.BasicCmdLineTool;
import opennlp.tools.cmdline.CLI;
import opennlp.tools.cmdline.CmdLineUtil;
import opennlp.tools.cmdline.PerformanceMonitor;
import opennlp.tools.cmdline.TerminateToolException;
import opennlp.tools.coref.DiscourseEntity;
import opennlp.tools.coref.LinkerMode;
import opennlp.tools.coref.mention.DefaultParse;
import opennlp.tools.coref.mention.Mention;
import opennlp.tools.coref.mention.MentionContext;
import opennlp.tools.lang.english.TreebankLinker;
import opennlp.tools.parser.Parse;
import opennlp.tools.parser.chunking.Parser;
import opennlp.tools.util.ObjectStream;
import opennlp.tools.util.PlainTextByLineStream;
import opennlp.tools.util.Span;
public class CoreferencerTool extends BasicCmdLineTool {
class CorefParse {
private Map<Parse, Integer> parseMap;
private List<Parse> parses;
public CorefParse(List<Parse> parses, DiscourseEntity[] entities) {
this.parses = parses;
parseMap = new HashMap<Parse, Integer>();
for (int ei=0,en=entities.length;ei<en;ei++) {
if (entities[ei].getNumMentions() > 1) {
for (Iterator<MentionContext> mi = entities[ei].getMentions(); mi.hasNext();) {
MentionContext mc = mi.next();
Parse mentionParse = ((DefaultParse) mc.getParse()).getParse();
parseMap.put(mentionParse,ei+1);
}
}
}
}
public void show() {
for (int pi=0,pn=parses.size();pi<pn;pi++) {
Parse p = parses.get(pi);
show(p);
System.out.println();
}
}
private void show(Parse p) {
int start;
start = p.getSpan().getStart();
if (!p.getType().equals(Parser.TOK_NODE)) {
System.out.print("(");
System.out.print(p.getType());
if (parseMap.containsKey(p)) {
System.out.print("#"+parseMap.get(p));
}
//System.out.print(p.hashCode()+"-"+parseMap.containsKey(p));
System.out.print(" ");
}
Parse[] children = p.getChildren();
for (int pi=0,pn=children.length;pi<pn;pi++) {
Parse c = children[pi];
Span s = c.getSpan();
if (start < s.getStart()) {
System.out.print(p.getText().substring(start, s.getStart()));
}
show(c);
start = s.getEnd();
}
System.out.print(p.getText().substring(start, p.getSpan().getEnd()));
if (!p.getType().equals(Parser.TOK_NODE)) {
System.out.print(")");
}
}
}
public String getShortDescription() {
return "learnable noun phrase coreferencer";
}
public void run(String[] args) {
if (args.length != 1) {
System.out.println(getHelp());
}
else {
TreebankLinker treebankLinker;
try {
treebankLinker = new TreebankLinker(args[0], LinkerMode.TEST);
} catch (IOException e) {
throw new TerminateToolException(-1, "Failed to load all coreferencer models!", e);
}
ObjectStream<String> lineStream =
new PlainTextByLineStream(new InputStreamReader(System.in));
PerformanceMonitor perfMon = new PerformanceMonitor(System.err, "parses");
perfMon.start();
try {
int sentenceNumber = 0;
List<Mention> document = new ArrayList<Mention>();
List<Parse> parses = new ArrayList<Parse>();
String line;
while ((line = lineStream.read()) != null) {
if (line.equals("")) {
DiscourseEntity[] entities = treebankLinker.getEntities(document.toArray(new Mention[document.size()]));
//showEntities(entities);
new CorefParse(parses,entities).show();
sentenceNumber=0;
document.clear();
parses.clear();
}
else {
Parse p = Parse.parseParse(line);
parses.add(p);
Mention[] extents = treebankLinker.getMentionFinder().getMentions(new DefaultParse(p,sentenceNumber));
//construct new parses for mentions which don't have constituents.
for (int ei=0,en=extents.length;ei<en;ei++) {
//System.err.println("PennTreebankLiner.main: "+ei+" "+extents[ei]);
if (extents[ei].getParse() == null) {
//not sure how to get head index, but its not used at this point.
Parse snp = new Parse(p.getText(),extents[ei].getSpan(),"NML",1.0,0);
p.insert(snp);
extents[ei].setParse(new DefaultParse(snp,sentenceNumber));
}
}
document.addAll(Arrays.asList(extents));
sentenceNumber++;
}
perfMon.incrementCounter();
}
}
catch (IOException e) {
CmdLineUtil.handleStdinIoError(e);
}
perfMon.stopAndPrintFinalResult();
}
}
public String getHelp() {
return "Usage: " + CLI.CMD + " " + getName() + " model_directory < parses";
}
}