/* Copyright (C) 2002 Univ. of Massachusetts Amherst, Computer Science Dept.
This file is part of "MALLET" (MAchine Learning for LanguagE Toolkit).
http://www.cs.umass.edu/~mccallum/mallet
This software is provided under the terms of the Common Public License,
version 1.0, as published by http://www.opensource.org. For further
information, see the file `LICENSE' included with this distribution. */
/**
A collection of labels, either for a multi-label problem (all
labels are part of the same label dictionary), or a factorized
labeling, (each label is part of a different dictionary).
@author Andrew McCallum <a href="mailto:mccallum@cs.umass.edu">mccallum@cs.umass.edu</a>
*/
package cc.mallet.types;
import java.io.Serializable;
import java.io.ObjectOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import cc.mallet.types.Label;
/** Usually some distribution over possible labels for an instance. */
public class Labels implements AlphabetCarrying, Serializable
{
Label[] labels;
public Labels (Label[] labels)
{
this.labels = new Label[labels.length];
System.arraycopy (labels, 0, this.labels, 0, labels.length);
}
// Number of factors
public int size () { return labels.length; }
public Label get (int i) { return labels[i]; }
public void set (int i, Label l) { labels[i] = l; }
public String toString ()
{
String ret = "";
for (int i = 0; i < labels.length; i++) {
ret += labels[i].toString();
if (i < labels.length - 1) ret += " ";
}
return ret;
}
public Alphabet getAlphabet () { return labels[0].getAlphabet(); }
public Alphabet[] getAlphabets () { return labels[0].getAlphabets(); }
// Serialization
private static final long serialVersionUID = 1;
private static final int CURRENT_SERIAL_VERSION = 0;
private void writeObject (ObjectOutputStream out) throws IOException {
out.writeInt(CURRENT_SERIAL_VERSION);
out.defaultWriteObject ();
}
private void readObject (ObjectInputStream in) throws IOException, ClassNotFoundException {
int version = in.readInt ();
in.defaultReadObject ();
}
}