The Critique of Critique

Critique, as a natural language description for assessing the quality of model-generated content, has played a vital role in the training, evaluation, and refinement of LLMs. However, a systematic method to evaluate the quality of critique is lacking. In this paper, we pioneer the critique of critique, termed META-CRITIQUE, which builds specific quantification criteria. To achieve a reliable evaluation outcome, we propose Atomic Information Units (AIUs), which describe the critique in a more fine-grained manner. METACRITIQUE aggregates each AIU's judgment for the overall score. Moreover, METACRITIQUE delivers a natural language rationale for the intricate reasoning within each judgment. Lastly, we construct a meta-evaluation dataset covering 4 tasks across 16 public datasets involving human-written and LLM-generated critiques. Experiments demonstrate that METACRITIQUE can achieve nearhuman performance. Our study can facilitate future research in LLM critiques based on our following observations and released resources: (1) superior critiques judged by METACRITIQUE can lead to better refinements, indicating that it can potentially enhance the alignment of existing LLMs; (2) the leaderboard of critique models reveals that opensource critique models commonly suffer from factuality issues; (3) relevant code and data are publicly available at https://github. com/GAIR-NLP/MetaCritique to support deeper exploration; (4) an API at PyPI with the usage documentation in Appendix C allows users to assess the critique conveniently.