How the ranking works

Every interaction adds weight to a movie, and that weight decays exponentially. A score is the sum of past events, each discounted by e^(-λΔt), with λ = ln 2 divided by the half-life.

Scores are stored as logarithms and updated with log-sum-exp, which keeps them finite for decades. Ranking never applies the decay at all: it is a positive factor shared by every movie, so it cannot change their order. That is why this application has no scheduled job.

Half-lifeLook ahead: 0 half-lives — now

Sliding forward divides every curve by the same factor, so the ranking below never reorders — that invariance is exactly why no scheduled job is needed. Changing the half-life does reorder it, because each one accumulates its own history.

1. Spider-Man: Brand New Day35.351
2. The Odyssey35.042
3. Disclosure Day34.878
4. Dune: Part Two34.772
5. Spider-Man: No Way Home34.550
6. Moana34.342
7. Masters of the Universe34.332
8. Toy Story 534.266