org.drools.beliefs.bayes.JunctionTreeSeparator Maven / Gradle / Ivy
/*
* Copyright 2015 Red Hat, Inc. and/or its affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
*
* 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 org.drools.beliefs.bayes;
import org.drools.beliefs.graph.Graph;
import org.drools.core.util.bitmask.OpenBitSet;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
public class JunctionTreeSeparator {
private int id;
private OpenBitSet bitSet;
private List values;
private JunctionTreeClique parent;
private JunctionTreeClique child;
//private double[] potentials;
public JunctionTreeSeparator(int id, JunctionTreeClique parent, JunctionTreeClique child, OpenBitSet bitSet, Graph graph) {
this.id = id;
this.bitSet = bitSet;
this.parent = parent;
this.child = child;
child.setParentSeparator(this);
parent.getChildren().add( this );
values = new ArrayList((int) bitSet.cardinality());
for (int i = bitSet.nextSetBit(0); i >= 0; i = bitSet.nextSetBit(i + 1)) {
values.add(graph.getNode(i).getContent());
}
}
public OpenBitSet getBitSet() {
return bitSet;
}
public JunctionTreeClique getParent() {
return parent;
}
public JunctionTreeClique getChild() {
return child;
}
public int getId() {
return id;
}
public SeparatorState createState() {
int numberOfStates = PotentialMultiplier.createNumberOfStates(values);
double[] potentials = new double[numberOfStates];
Arrays.fill(potentials, 1);
return new SeparatorState(this, potentials);
}
public void resetState(SeparatorState sepSet) {
Arrays.fill(sepSet.getPotentials(), 1);
}
public List getValues() {
return values;
}
@Override
public String toString() {
return "JunctionTreeSeparator{" +
"id=" + id +
", bitSet=" + bitSet +
", parent=" + parent.getId() +
", child=" + child.getId() +
'}';
}
}