Talk by Ali Kavis (UT Austin)
summary
Presents a parameter-free second-order optimistic method for monotone convex–concave min–max problems that removes no line search or subsolvers, proves the faster O(1/T^{1.5}) rate under a Lipschitz Jacobian assumption and a mild extra assumption (operator Lipschitz) to keep iterates bounded, and uses a Hessian-regularized Newton-style update plus an explicit adaptive step rule. Experiments show parity with line-search in low dimension and clear advantage as dimension grows; deterministic tests work, stochastic extensions remain nontrivial.
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chapters (8)
- 0:00Problem setting
- 3:32Operator formulation
- 5:45Literature recap
- 8:58Second-order challenges
- 11:28Optimistic method
- 16:34Algorithm goals
- 16:44Proposed adaptive method
- 25:48Q&A and discussion
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