Since version 0.40, Nkululeko can now show the best performing X acoustic features according to some model.
There is a new section call EXPL (short for exploration), and you could state
model = tree
sample_num = 15
in your config file, and then run the exploration module like this:
python -m nkululeko.explore --config my_config.ini
The resulting list will then appear in the result folder and a barplot image in the image folder.
Afterwards you could inspect single features as described here