FRAME: Evaluating Simulatability Metrics for Free-Text Rationales

  title={FRAME: Evaluating Simulatability Metrics for Free-Text Rationales},
  author={Aaron Chan and Shaoliang Nie and Liang Tan and Xiaochang Peng and Hamed Firooz and Maziar Sanjabi and Xiang Ren},
Free-text rationales aim to explain neural language model (LM) behavior more flexibly and intuitively via natural language. To ensure rationale quality, it is important to have metrics for measuring rationales’ faithfulness (re-flects LM’s actual behavior) and plausibility (convincing to humans). All existing free-text rationale metrics are based on simulatability (association between rationale and LM’s predicted label), but there is no protocol for assessing such metrics’ reliability. To… 



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