Understand your audience
Interests that change over time
Follow how one person's interests move, and tell a settled taste apart from a single unusual session.
Fragmented behavioural signals are turned into one current picture of what a person is interested in now, rather than an average of everything they have ever done.
Long-term preference and short-term intent are held separately, so an unusual evening does not rewrite a profile - and a genuine change is still picked up quickly.