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Yitao Zheng

2 accepted papers

2025

Video-Enhanced Offline Reinforcement Learning: A Model-Based Approach

ICML 2025poster

Offline reinforcement learning (RL) enables policy optimization using static datasets, avoiding the risks and costs of extensive real-world exploration. However, it struggles with suboptimal offline behaviors and inaccurate value estimation due to the lack of environmental interaction. We present Vi…

2021

EvaLDA: Efficient Evasion Attacks Towards Latent Dirichlet Allocation

AAAI 2021technical

As one of the most powerful topic models, Latent Dirichlet Allocation (LDA) has been used in a vast range of tasks, including document understanding, information retrieval and peer-reviewer assignment. Despite its tremendous popularity, the security of LDA has rarely been studied. This poses severe…