code: private void excludeByFeatCount(IntIntDenseVector[][] counts) {
          for (int t=0; t<included.length; t++) {
              for (int c = 0; c < included[t].length; c++) {
                  for (int k = 0; k < included[t][c].length; k++) {
                      boolean exclude = (counts[t][c].get(k) < prm.featCountCutoff);
                      if (exclude) {
                          included[t][c][k] = false;
                      }
                  }
              }
          }
      }
docs: Exclude those features which do not pass the feature count cutoff
  threshold (bias features will be kept separately).