/* This file is part of the Joshua Machine Translation System.
*
* Joshua 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 library; if not, write to the Free
* Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
package joshua.decoder.ff;
import joshua.decoder.ff.tm.Rule;
/**
*
* @author Zhifei Li, <zhifei.work@gmail.com>
* @version $LastChangedDate: 2010-01-14 19:15:28 -0600 (Thu, 14 Jan 2010) $
*/
public final class SourceLatticeArcLogPFF extends DefaultStatelessFF {
public SourceLatticeArcLogPFF(final int featureID, final double weight) {
super(weight, -1, featureID); // TODO: owner
}
public double estimateLogP(final Rule rule, int sentID) {
// TODO: why not check the owner
/*if (this.owner == rule.owner) {
return rule.lattice_cost;
} else {
return 0.0;
}*/
return - rule.getLatticeCost();
}
}