Tata Institute of Fundamental Research

Twenty Questions: Distributional Search Theory

STCS Colloquium
Speaker: Yuval Filmus (Technion - Israel Institute of Technology Department of Computer Science Israel)
Organiser: Prahladh Harsha
Date: Tuesday, 29 Jan 2019, 14:30 to 15:30
Venue: A-201 (STCS Seminar Room)

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Abstract:  Abstract:  I’m thinking of a person in the audience. How long will it take you to find whom, using only Yes/No questions?
We consider this puzzle, which underlies search theory, with a twist:
I’m choosing the person according to a known distribution, and your goal is to minimize the *expected* number of questions.
How does the performance of your strategy depend on the type of question you’re allowed to ask? On the type of distribution I am allowed to choose? What happens if I can lie?
Joint work with Yuval Dagan (MIT), Ariel Gabizon (Zcash), Daniel Kane (UCSD), Shay Moran (IAS).