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Chien Feng

3 accepted papers

2024

Boosting Flow-based Generative Super-Resolution Models via Learned Prior

CVPR 2024poster

Flow-based super-resolution (SR) models have demonstrated astonishing capabilities in generating high-quality images. However these methods encounter several challenges during image generation such as grid artifacts exploding inverses and suboptimal results due to a fixed sampling temperature. To ov…

2024

Expert Proximity as Surrogate Rewards for Single Demonstration Imitation Learning

ICML 2024poster

In this paper, we focus on single-demonstration imitation learning (IL), a practical approach for real-world applications where acquiring multiple expert demonstrations is costly or infeasible and the ground truth reward function is not available. In contrast to typical IL settings with multiple dem…

2024

Maximum Entropy Reinforcement Learning via Energy-Based Normalizing Flow

NeurIPS 2024poster

Existing Maximum-Entropy (MaxEnt) Reinforcement Learning (RL) methods for continuous action spaces are typically formulated based on actor-critic frameworks and optimized through alternating steps of policy evaluation and policy improvement. In the policy evaluation steps, the critic is updated to c…