Search Results for author: Yueyang Liu

Found 9 papers, 0 papers with code

Non-Stationary Contextual Bandit Learning via Neural Predictive Ensemble Sampling

no code implementations11 Oct 2023 Zheqing Zhu, Yueyang Liu, Xu Kuang, Benjamin Van Roy

Real-world applications of contextual bandits often exhibit non-stationarity due to seasonality, serendipity, and evolving social trends.

Multi-Armed Bandits

Continual Learning as Computationally Constrained Reinforcement Learning

no code implementations10 Jul 2023 Saurabh Kumar, Henrik Marklund, Ashish Rao, Yifan Zhu, Hong Jun Jeon, Yueyang Liu, Benjamin Van Roy

The design of such agents, which remains a long-standing challenge of artificial intelligence, is addressed by the subject of continual learning.

Continual Learning reinforcement-learning

A Semi-Supervised Framework for Misinformation Detection

no code implementations22 Apr 2023 Yueyang Liu, Zois Boukouvalas, Nathalie Japkowicz

The spread of misinformation in social media outlets has become a prevalent societal problem and is the cause of many kinds of social unrest.

Misinformation

A Definition of Non-Stationary Bandits

no code implementations23 Feb 2023 Yueyang Liu, Xu Kuang, Benjamin Van Roy

Despite the subject of non-stationary bandit learning having attracted much recent attention, we have yet to identify a formal definition of non-stationarity that can consistently distinguish non-stationary bandits from stationary ones.

Brain Model State Space Reconstruction Using an LSTM Neural Network

no code implementations20 Jan 2023 Yueyang Liu, Artemio Soto-Breceda, Yun Zhao, Phillipa Karoly, Mark J. Cook, David B. Grayden, Daniel Schmidt, Levin Kuhlmann1

Approach An LSTM filter was trained on simulated EEG data generated by a neural mass model using a wide range of parameters.

EEG

Non-Stationary Bandit Learning via Predictive Sampling

no code implementations4 May 2022 Yueyang Liu, Xu Kuang, Benjamin Van Roy

We attribute such failures to the fact that, when exploring, the algorithm does not differentiate actions based on how quickly the information acquired loses its usefulness due to non-stationarity.

Attribute Thompson Sampling

Gaussian Imagination in Bandit Learning

no code implementations6 Jan 2022 Yueyang Liu, Adithya M. Devraj, Benjamin Van Roy, Kuang Xu

We study the performance of an agent that attains a bounded information ratio with respect to a bandit environment with a Gaussian prior distribution and a Gaussian likelihood function when applied instead to a Bernoulli bandit.

Robust Convergence in Federated Learning through Label-wise Clustering

no code implementations28 Dec 2021 Hunmin Lee, Yueyang Liu, Donghyun Kim, Yingshu Li

Non-IID dataset and heterogeneous environment of the local clients are regarded as a major issue in Federated Learning (FL), causing a downturn in the convergence without achieving satisfactory performance.

Clustering Federated Learning

A Black-box NLP Classifier Attacker

no code implementations22 Dec 2021 Yueyang Liu, Hunmin Lee, Zhipeng Cai

Deep neural networks have a wide range of applications in solving various real-world tasks and have achieved satisfactory results, in domains such as computer vision, image classification, and natural language processing.

Image Classification

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