Search Results for author: Qitong Gao

Found 7 papers, 3 papers with code

ε-Neural Thompson Sampling of Deep Brain Stimulation for Parkinson Disease Treatment

no code implementations11 Mar 2024 Hao-Lun Hsu, Qitong Gao, Miroslav Pajic

Traditional commercial DBS devices are only able to deliver fixed-frequency periodic pulses to the basal ganglia (BG) regions of the brain, i. e., continuous DBS (cDBS).

Multi-Armed Bandits Reinforcement Learning (RL) +1

Robust Reinforcement Learning through Efficient Adversarial Herding

no code implementations12 Jun 2023 Juncheng Dong, Hao-Lun Hsu, Qitong Gao, Vahid Tarokh, Miroslav Pajic

In this work, we extend the two-player game by introducing an adversarial herd, which involves a group of adversaries, in order to address ($\textit{i}$) the difficulty of the inner optimization problem, and ($\textit{ii}$) the potential over pessimism caused by the selection of a candidate adversary set that may include unlikely scenarios.

reinforcement-learning Reinforcement Learning (RL)

Offline Learning of Closed-Loop Deep Brain Stimulation Controllers for Parkinson Disease Treatment

1 code implementation5 Feb 2023 Qitong Gao, Stephen L. Schimdt, Afsana Chowdhury, Guangyu Feng, Jennifer J. Peters, Katherine Genty, Warren M. Grill, Dennis A. Turner, Miroslav Pajic

In this work, we introduce an offline reinforcement learning (RL) framework, allowing the use of past clinical data to train an RL policy to adjust the stimulation amplitude in real time, with the goal of reducing energy use while maintaining the same level of treatment (i. e., control) efficacy as cDBS.

Reinforcement Learning (RL)

Variational Latent Branching Model for Off-Policy Evaluation

1 code implementation28 Jan 2023 Qitong Gao, Ge Gao, Min Chi, Miroslav Pajic

In this work, we propose the variational latent branching model (VLBM) to learn the transition function of MDPs by formulating the environmental dynamics as a compact latent space, from which the next states and rewards are then sampled.

Off-policy evaluation Variational Inference

Gradient Importance Learning for Incomplete Observations

1 code implementation ICLR 2022 Qitong Gao, Dong Wang, Joshua D. Amason, Siyang Yuan, Chenyang Tao, Ricardo Henao, Majda Hadziahmetovic, Lawrence Carin, Miroslav Pajic

Though recent works have developed methods that can generate estimates (or imputations) of the missing entries in a dataset to facilitate downstream analysis, most depend on assumptions that may not align with real-world applications and could suffer from poor performance in subsequent tasks such as classification.

Imputation Reinforcement Learning (RL) +2

Learning-Based Vulnerability Analysis of Cyber-Physical Systems

no code implementations10 Mar 2021 Amir Khazraei, Spencer Hallyburton, Qitong Gao, Yu Wang, Miroslav Pajic

This work focuses on the use of deep learning for vulnerability analysis of cyber-physical systems (CPS).

Anomaly Detection

Learning Monotone Dynamics by Neural Networks

no code implementations11 Jun 2020 Yu Wang, Qitong Gao, Miroslav Pajic

For monotonicity constraints, we propose to use nonnegative neural networks and batch normalization.

Cannot find the paper you are looking for? You can Submit a new open access paper.