/*******************************************************************************
* Copyright (C) 2010-2012 Dominik Jain.
*
* This file is part of ProbCog.
*
* ProbCog is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* ProbCog 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with ProbCog. If not, see <http://www.gnu.org/licenses/>.
******************************************************************************/
package probcog.hmm;
import java.util.Arrays;
public class DistributionLearner {
protected double[] dist;
public DistributionLearner(int numEntries, boolean usePseudoCounts) {
dist = new double[numEntries];
if(usePseudoCounts) {
double pseudo = 1.0;
Arrays.fill(dist, pseudo);
}
}
public void learn(int i) {
dist[i] += 1.0;
}
public double[] finish() {
// normalize
double sum = 0;
for(int i = 0; i < dist.length; i++)
sum += dist[i];
for(int j = 0; j < dist.length; j++)
dist[j] /= sum;
return dist;
}
}