code: protected Cluster<BiclusterModel> defineBicluster(BitSet rows, BitSet cols) {
      ArrayDBIDs rowIDs = rowsBitsetToIDs(rows);
      int[] colIDs = colsBitsetToIDs(cols);
      return new Cluster<>(rowIDs, new BiclusterModel(colIDs));
    }
docs: Defines a Bicluster as given by the included rows and columns.
  
  @param rows the rows included in the Bicluster
  @param cols the columns included in the Bicluster
  @return a Bicluster as given by the included rows and columns