Search Results for author: Jialin Dong

Found 5 papers, 0 papers with code

Does Sparsity Help in Learning Misspecified Linear Bandits?

no code implementations29 Mar 2023 Jialin Dong, Lin F. Yang

In particular, Du et al. (2020) show that even if a learner is given linear features in $\mathbb{R}^d$ that approximate the rewards in a bandit or RL with a uniform error of $\varepsilon$, searching for an $O(\varepsilon)$-optimal action requires pulling at least $\Omega(\exp(d))$ queries.

reinforcement-learning Reinforcement Learning (RL)

Global Neighbor Sampling for Mixed CPU-GPU Training on Giant Graphs

no code implementations11 Jun 2021 Jialin Dong, Da Zheng, Lin F. Yang, Geroge Karypis

This global cache allows in-GPU importance sampling of mini-batches, which drastically reduces the number of nodes in a mini-batch, especially in the input layer, to reduce data copy between CPU and GPU and mini-batch computation without compromising the training convergence rate or model accuracy.

Fraud Detection

Faster Activity and Data Detection in Massive Random Access: A Multi-armed Bandit Approach

no code implementations28 Jan 2020 Jialin Dong, Jun Zhang, Yuanming Shi, Jessie Hui Wang

In this paper, we develop multi-armed bandit approaches for more efficient detection via coordinate descent, which make a delicate trade-off between exploration and exploitation in coordinate selection.

Action Detection Activity Detection

Blind Over-the-Air Computation and Data Fusion via Provable Wirtinger Flow

no code implementations12 Nov 2018 Jialin Dong, Yuanming Shi, Zhi Ding

Over-the-air computation (AirComp) shows great promise to support fast data fusion in Internet-of-Things (IoT) networks.

Nonconvex Demixing From Bilinear Measurements

no code implementations18 Sep 2018 Jialin Dong, Yuanming Shi

We consider the problem of demixing a sequence of source signals from the sum of noisy bilinear measurements.

Dictionary Learning

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