calcs.add(new EncodingLengthCalculator(new GammaIntegerEncoding(1)));
for (int i = 2; i < 5; i++)
calcs.add(new EncodingLengthCalculator(
new SubexpIntegerEncoding(i)));
if (dictionaryThreshold < 1)
dictionary = null;
else {
dictionary = new HashMap<Integer, MutableInt>();