vptree_clusterer.populate(s);
}
List<Set<Serializable>> vptree_clusters = vptree_clusterer.getClusters(radius);
long vptree_elapsed = System.currentTimeMillis() - vptree_start;
int vptree_distances = distance.getCount();
distance.resetCounter();
long ngram_start = System.currentTimeMillis();
Clusterer ngram_clusterer = new NGramClusterer(distance,blocking_size);
for (String s: strings) {
ngram_clusterer.populate(s);