RBMRenderer renderer = new RBMRenderer();
//Map<Integer, Pair<String, Integer>> map = renderer.generateHistogramBuckets( input, 2 );
Map<Integer, Integer> map = renderer.generateHistogramBuckets( input, 2 );
// for (Map.Entry<Integer, Pair<String, Integer>> entry : map.entrySet()) {
for (Map.Entry<Integer, Integer> entry : map.entrySet()) {
Integer key = entry.getKey();