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 Statistical Learning


Local policy search with Bayesian optimization Sarah Müller

Neural Information Processing Systems

Nevertheless, instead of systematically reasoning and actively choosing informative samples, policy gradients for local search are often obtained from random perturbations. These random samples yield high variance estimates and hence are sub-optimal in terms of sample complexity.





Adapting to Function Difficulty and Growth Conditions in Private Optimization Hilal Asi Daniel Levy

Neural Information Processing Systems

We develop algorithms for private stochastic convex optimization that adapt to the hardness of the specific function we wish to optimize. While previous work provide worst-case bounds for arbitrary convex functions, it is often the case that the function at hand belongs to a smaller class that enjoys faster rates. Concretely, we show that for functions exhibiting κ-growth around the optimum, i.e., f ( x) f (x


Adapting to Function Difficulty and Growth Conditions in Private Optimization Hilal Asi Daniel Levy

Neural Information Processing Systems

We develop algorithms for private stochastic convex optimization that adapt to the hardness of the specific function we wish to optimize. While previous work provide worst-case bounds for arbitrary convex functions, it is often the case that the function at hand belongs to a smaller class that enjoys faster rates. Concretely, we show that for functions exhibiting κ-growth around the optimum, i.e., f ( x) f (x