Summary
RLHF is a powerful technique used by many frontier model providers, such as OpenAI and Anthropic, in fine-tuning pre-trained models. This chapter discussed some basic ideas behind this pattern. RLHF still has its limitations since humans are involved in the process of training a reward model, and as such, it doesn’t scale well. Recently, some more generic reinforcement learning without human feedback has been tested by companies such as DeepSeek. However, this is beyond the scope of this book. You can refer to the following research paper by DeepSeek for more information: https://arxiv.org/pdf/2501.12948.
As we move forward, we’ll explore advanced prompt engineering techniques for LLMs. In the next chapter, we’ll delve into sophisticated methods for guiding LLM behavior and outputs through carefully crafted prompts, building on the alignment techniques we’ve discussed here. These advanced prompting strategies will enable you to leverage the full...