Search Results for author: Kevin Tan

Found 5 papers, 1 papers with code

Distributed Least Squares in Small Space via Sketching and Bias Reduction

no code implementations8 May 2024 Sachin Garg, Kevin Tan, Michał Dereziński

Matrix sketching is a powerful tool for reducing the size of large data matrices.

A Natural Extension To Online Algorithms For Hybrid RL With Limited Coverage

no code implementations7 Mar 2024 Kevin Tan, Ziping Xu

Hybrid Reinforcement Learning (RL), leveraging both online and offline data, has garnered recent interest, yet research on its provable benefits remains sparse.

Efficient Exploration Reinforcement Learning (RL)

Offline Policy Evaluation and Optimization under Confounding

no code implementations29 Nov 2022 Chinmaya Kausik, Yangyi Lu, Kevin Tan, Maggie Makar, Yixin Wang, Ambuj Tewari

Evaluating and optimizing policies in the presence of unobserved confounders is a problem of growing interest in offline reinforcement learning.

Offline RL Off-policy evaluation

Learning Mixtures of Markov Chains and MDPs

1 code implementation17 Nov 2022 Chinmaya Kausik, Kevin Tan, Ambuj Tewari

We present an algorithm for learning mixtures of Markov chains and Markov decision processes (MDPs) from short unlabeled trajectories.

Objective Micro-Facial Movement Detection Using FACS-Based Regions and Baseline Evaluation

no code implementations15 Dec 2016 Adrian K. Davison, Cliff Lansley, Choon Ching Ng, Kevin Tan, Moi Hoon Yap

This paper proposes an individualised baseline micro-movement detection method using 3D Histogram of Oriented Gradients (3D HOG) temporal difference method.

Optical Flow Estimation

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