Search Results for author: Xingjian Bai

Found 4 papers, 2 papers with code

Fixed Point Diffusion Models

1 code implementation16 Jan 2024 Xingjian Bai, Luke Melas-Kyriazi

We introduce the Fixed Point Diffusion Model (FPDM), a novel approach to image generation that integrates the concept of fixed point solving into the framework of diffusion-based generative modeling.

Denoising Image Generation

Goodhart's Law in Reinforcement Learning

no code implementations13 Oct 2023 Jacek Karwowski, Oliver Hayman, Xingjian Bai, Klaus Kiendlhofer, Charlie Griffin, Joar Skalse

First, we propose a way to quantify the magnitude of this effect and show empirically that optimising an imperfect proxy reward often leads to the behaviour predicted by Goodhart's law for a wide range of environments and reward functions.

reinforcement-learning

Wasserstein distributional robustness of neural networks

1 code implementation NeurIPS 2023 Xingjian Bai, Guangyi He, Yifan Jiang, Jan Obloj

To evaluate the distributional robustness of neural networks, we propose a first-order AA algorithm and its multi-step version.

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