Direct Preference Optimization for LLM Alignment

Direct Preference Optimization (DPO) offers a simpler, more stable alternative to traditional RLHF for aligning large language models with human preferences. By reframing preference learning as a classification problem and eliminating the need for a separate reward model, DPO reduces computational overhead and training complexity. While it excels in efficiency and ease of use, RLHF still has advantages in complex, high-stakes, or online learning scenarios