if (node.isNature()) {
ClusterBundle bundle = clusterHash.get(node);
SJTVertex parentCluster = bundle.jtcluster;
JTPotential clusterPT = parentCluster.getPotential();
clusterPT.multiplyByProbabilitySubtable(node.getDiscreteCPT(),
bundle.fopmap);
} else if (node.isUtility()) {
ClusterBundle bundle = clusterHash.get(node);
SJTVertex parentCluster = bundle.jtcluster;
JTPotential clusterPT = parentCluster.getPotential();