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Graph Neural Thompson Sampling
June 18, 2024, 4:47 a.m. | Shuang Wu, Arash A. Amini
cs.LG updates on arXiv.org arxiv.org
Abstract: We consider an online decision-making problem with a reward function defined over graph-structured data. We formally formulate the problem as an instance of graph action bandit. We then propose \texttt{GNN-TS}, a Graph Neural Network (GNN) powered Thompson Sampling (TS) algorithm which employs a GNN approximator for estimating the mean reward function and the graph neural tangent features for uncertainty estimation. We prove that, under certain boundness assumptions on the reward function, GNN-TS achieves a state-of-the-art …
abstract action algorithm arxiv cs.ai cs.lg data decision function gnn graph graph neural network instance making mean network neural network problem sampling stat.ml structured data type
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