Widths of convex sets and the power of adaption and randomization
- 👤 Speaker: Mario Ullrich (Johannes Kepler Universität)
- 📅 Date & Time: Thursday 18 July 2024, 10:15 - 10:55
- 📍 Venue: Seminar Room 1, Newton Institute
Abstract
We present bounds between different widths of convex subsets of Banach spaces, including Gelfand, Kolmogorov and Bernstein widths.Using this, and some relations between widths and minimal errors, we obtain bounds on the maximal gain of adaptive and randomizedalgorithms over non-adaptive, deterministic ones for approximating linear operators on convex sets. We conclude with an overview of the new state of the art and a list of open problems.
Series This talk is part of the Isaac Newton Institute Seminar Series series.
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Mario Ullrich (Johannes Kepler Universität)
Thursday 18 July 2024, 10:15-10:55