4 papers
Agent-Centric Social Trajectory Prediction: A Free Energy Principle Perspective
Yanping Wu, Ji Zhang, Hao Chen +2
Trajectory prediction methods have demonstrated remarkable capabilities in capturing complex motion patterns. However, existing methods rely on global state assumptions, suffer fro…
Score as Action: Fine-Tuning Diffusion Generative Models by Continuous-time Reinforcement Learning
Hanyang Zhao, Haoxian Chen, Ji Zhang +2
Reinforcement learning from human feedback (RLHF), which aligns a diffusion model with input prompt, has become a crucial step in building reliable generative AI models. Most works…
Scores as Actions: a framework of fine-tuning diffusion models by continuous-time reinforcement learning
Hanyang Zhao, Haoxian Chen, Ji Zhang +2
Reinforcement Learning from human feedback (RLHF) has been shown a promising direction for aligning generative models with human intent and has also been explored in recent works f…
Incorporating Causal Analysis into Diversified and Logical Response Generation
Jiayi Liu, Wei Wei, Zhixuan Chu +4
Although the Conditional Variational AutoEncoder (CVAE) model can generate more diversified responses than the traditional Seq2Seq model, the responses often have low relevance wit…