Example embodiments relate to hierarchical rule clustering. The examples disclosed herein access information about a set of rules, where information for an individual rule comprises information about a set of hypershapes associated with the individual rule. A respective hypervolume for each set of hypershapes associated with each individual rule may be calculated based on the accessed information. A first rule and a second rule may be combined as a new individual rule in the set of rules based on overlaps between the calculated hypervolumes.