Second Thoughts are Best: Learning to Re-Align With Human Values from Text Edits

Understand

We present Second Thought, a new learning paradigm that enables language models (LMs) to re-align with human values.

• By modeling the chain-of-edits between value-unaligned and value-aligned text, with LM fine-tuning and additional refinement through reinforcement learning, Second Thought not only achieves superior performance in three value alignment benchmark datasets but also shows strong human-value transfer learning ability in few-shot scenarios.
• The generated editing steps also offer better interpretability and ease for interactive error correction.
• Extensive human evaluations further confirm its effectiveness.