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Predict.java
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Predict.java
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///////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2001 Chieu Hai Leong and Jason Baldridge
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//////////////////////////////////////////////////////////////////////////////
import opennlp.maxent.*;
import opennlp.maxent.io.*;
import java.io.*;
/**
* Test the model on some input.
*
* @author Jason Baldridge
* @version $Revision: 1.2 $, $Date: 2001/11/20 17:07:17 $
*/
public class Predict {
MaxentModel _model;
ContextGenerator _cg = new BasicContextGenerator();
public Predict (MaxentModel m) {
_model = m;
}
private void eval (String predicates) {
double[] ocs = _model.eval(_cg.getContext(predicates));
System.out.println("For context: " + predicates
+ "\n" + _model.getAllOutcomes(ocs) + "\n");
}
/**
* Main method. Call as follows:
* <p>
* java Predict dataFile (modelFile)
*/
public static void main(String[] args) {
String dataFileName, modelFileName;
if (args.length > 0) {
dataFileName = args[0];
if (args.length > 1)
modelFileName = args[1];
else
modelFileName =
dataFileName.substring(0,dataFileName.lastIndexOf('.'))
+ "Model.txt";
}
else {
dataFileName = "";
modelFileName = "weatherModel.txt";
}
Predict predictor = null;
try {
GISModel m =
new SuffixSensitiveGISModelReader(
new File(modelFileName)).getModel();
predictor = new Predict(m);
} catch (Exception e) {
e.printStackTrace();
System.exit(0);
}
if (dataFileName.equals("")) {
predictor.eval("Rainy Happy Humid");
predictor.eval("Rainy");
predictor.eval("Blarmey");
}
else {
try {
DataStream ds =
new PlainTextByLineDataStream(
new FileReader(new File(args[0])));
while (ds.hasNext()) {
String s = (String)ds.nextToken();
predictor.eval(s.substring(0, s.lastIndexOf(' ')));
}
return;
}
catch (Exception e) {
System.out.println("Unable to read from specified file: "
+ args[0]);
System.out.println();
}
}
}
}