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Bibliographic Details
Main Authors: Chen, Angelica, Phang, Jason, Parrish, Alicia, Padmakumar, Vishakh, Zhao, Chen, Bowman, Samuel R., Cho, Kyunghyun
Format: Preprint
Published: 2023
Subjects:
Online Access:https://arxiv.org/abs/2305.14279
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Table of Contents:
  • Large language models (LLMs) have achieved widespread success on a variety of in-context few-shot tasks, but this success is typically evaluated via correctness rather than consistency. We argue that self-consistency is an important criteria for valid multi-step reasoning in tasks where the solution is composed of the answers to multiple sub-steps. We propose two types of self-consistency that are particularly important for multi-step reasoning -- hypothetical consistency (a model's ability to predict what its output would be in a hypothetical other context) and compositional consistency (consistency of a model's final outputs when intermediate sub-steps are replaced with the model's outputs for those steps). We demonstrate that multiple variants of the GPT-3/-4 models exhibit poor consistency rates across both types of consistency on a variety of tasks.