java.util.PriorityQueue<BoundablePair> kNearestNeighbors = new java.util.PriorityQueue<BoundablePair>(k, new BoundablePairDistanceComparator(false));
java.util.PriorityQueue<BoundablePair> kNearestNeighbors = new java.util.PriorityQueue<BoundablePair>(k, new BoundablePairDistanceComparator(false));