Search Results for author: David Cheikhi

Found 3 papers, 0 papers with code

On the Limited Representational Power of Value Functions and its Links to Statistical (In)Efficiency

no code implementations11 Mar 2024 David Cheikhi, Daniel Russo

In several, there is no information loss and value-based methods are as statistically efficient as model based ones.

On the Statistical Benefits of Temporal Difference Learning

no code implementations30 Jan 2023 David Cheikhi, Daniel Russo

Given a dataset on actions and resulting long-term rewards, a direct estimation approach fits value functions that minimize prediction error on the training data.

Stochastic Flows and Geometric Optimization on the Orthogonal Group

no code implementations ICML 2020 Krzysztof Choromanski, David Cheikhi, Jared Davis, Valerii Likhosherstov, Achille Nazaret, Achraf Bahamou, Xingyou Song, Mrugank Akarte, Jack Parker-Holder, Jacob Bergquist, Yuan Gao, Aldo Pacchiano, Tamas Sarlos, Adrian Weller, Vikas Sindhwani

We present a new class of stochastic, geometrically-driven optimization algorithms on the orthogonal group $O(d)$ and naturally reductive homogeneous manifolds obtained from the action of the rotation group $SO(d)$.

Metric Learning Stochastic Optimization

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