Intellectually Curious

The Gittins Index: When to Exploit, When to Explore

Mike Breault

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0:00 | 5:27

A concise, math-forward tour of the Gittins index—the rule that turns uncertainty into a value and tells you which 'arm' to pull in the multi-armed bandit problem. We'll trace the idea from slot machines to real-world decisions in energy and medicine, explain the 'exploration tax' and why uncertainty can be valuable, and discuss the limits when systems evolve beyond static assumptions.


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