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The gist (from reading the paper) is to compute a ranking of the choices based on past performance that optimally selects the best bandit based on incomplete (a
by tel 15y ago
The gist (from reading the paper) is to compute a ranking of the choices based on past performance that optimally selects the best bandit based on incomplete (and stochastic) observations.
I can understand some hesitance to post the exact algorithm because, like anything that fixes the large number of heinous flaws in basic hypothesis testing, it gets complicated.
Worse, the paper presents a number of algorithms which appear, at first glance, to be very simple and performant. The primary problem with that is they are analyzing a very simplified version of the problem; assuming independence greatly reduces the practical flexibility of the algorithm.
Anyway, the basic flavor of the algorithm is to try to spend most of your time running the choice with the highest average reward (click-throughs, dollars) with some deterministic or stochastic correction for the chance that a worse performing model just happened to have the highest average at this point in your test.