/*
* 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.chunker;
import java.io.File;
import java.io.IOException;
import java.io.InputStreamReader;
import opennlp.tools.chunker.ChunkSample;
import opennlp.tools.chunker.ChunkerME;
import opennlp.tools.chunker.ChunkerModel;
import opennlp.tools.chunker.DefaultChunkerSequenceValidator;
import opennlp.tools.cmdline.CLI;
import opennlp.tools.cmdline.CmdLineTool;
import opennlp.tools.cmdline.CmdLineUtil;
import opennlp.tools.cmdline.PerformanceMonitor;
import opennlp.tools.cmdline.TerminateToolException;
import opennlp.tools.postag.POSSample;
import opennlp.tools.util.InvalidFormatException;
import opennlp.tools.util.ObjectStream;
import opennlp.tools.util.PlainTextByLineStream;
public class ChunkerMETool implements CmdLineTool {
public String getName() {
return "ChunkerME";
}
public String getShortDescription() {
return "learnable chunker";
}
public String getHelp() {
return "Usage: " + CLI.CMD + " " + getName() + " model < sentences";
}
public void run(String[] args) {
if (args.length != 1) {
System.out.println(getHelp());
throw new TerminateToolException(1);
}
ChunkerModel model = new ChunkerModelLoader().load(new File(args[0]));
ChunkerME chunker = new ChunkerME(model, ChunkerME.DEFAULT_BEAM_SIZE,
new DefaultChunkerSequenceValidator());
ObjectStream<String> lineStream =
new PlainTextByLineStream(new InputStreamReader(System.in));
PerformanceMonitor perfMon = new PerformanceMonitor(System.err, "sent");
perfMon.start();
try {
String line;
while ((line = lineStream.read()) != null) {
POSSample posSample;
try {
posSample = POSSample.parse(line);
} catch (InvalidFormatException e) {
System.err.println("Invalid format:");
System.err.println(line);
continue;
}
String[] chunks = chunker.chunk(posSample.getSentence(),
posSample.getTags());
System.out.println(new ChunkSample(posSample.getSentence(),
posSample.getTags(), chunks).nicePrint());
perfMon.incrementCounter();
}
}
catch (IOException e) {
CmdLineUtil.handleStdinIoError(e);
}
perfMon.stopAndPrintFinalResult();
}
}