[D] Can Direct Preference Optimization (DPO) be used to replace any type of RL for LLMs, or is it better suited for just scenarios like RLHF?

[DPO Paper](https://arxiv.org/abs/2305.18290)

I read a really fascinating paper where RL was used on LLMs to make them better at interacting in embodied environments. [https://arxiv.org/abs/2310.08588](https://arxiv.org/abs/2310.08588)

The technique was called Reinforcement Learning with Environmental Feedback (RLEF).

In the paper PPO was used, but I'm wondering if DPO could be used to replace it?

environmental feedback machinelearning paper ppo reinforcement reinforcement learning rlef