// The current concept.
String concept = vocab[conceptID].getKey();
String[] concepts = concept.split(" ");
MarkovRandomField conceptMRF = curBuilder.buildMRF(concepts);
MRFDocumentRanker ranker = new MRFDocumentRanker(conceptMRF, docSet, docSet.length);
Accumulator[] conceptResults = ranker.rank();
Arrays.sort(conceptResults, new Accumulator.DocnoComparator());