Since ,/4init~i+l is produced by expanding only analyses on priority queue HI '~it, the set of complete trees consistent with the partial derivations on priority queue ~4i,,~t is a subset of the "i+1 set of complete trees consistent with the partial derivations on priority queue H~ nit, that is, the total probability mass represented by the priority queues is monotonically decreasing.
conditional word probabilities defined in a way consistent with Equation 14 will always be between zero and one.