An agent's experience is recorded as a sequence of four state-action pairs: first (s1, a1), then (s1, a2), then (s2, a1), and finally (s1, a1). How would this collection of four interactions be represented as a multiset?

An agent's experience over five time steps is recorded as the following multiset of state-action pairs: D = {(s1, a1), (s2, a2), (s1, a1), (s3, a1), (s1, a1)}. If this data were instead stored as a standard set, which only contains unique elements, what crucial information would be lost?

Counting Occurrences in a State-Action Multiset