arXiv AI By Suryansh Talukdar (Purdue University Fort Wayne), Taha Sarwat (Purdue University Fort Wayne), Jonathan Rusert (Purdue University Fort Wayne)

Mitigating Demographic Disparities in Explanation-Human Alignment via Rationale Regularization

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The paper investigates explanation fairness in hate‑speech detection, noting that high classification accuracy does not guarantee equally plausible explanations for all demographic groups. Using the HateXplain dataset, the authors introduce Plausibility‑EFG, a metric that quantifies the largest difference in explanation plausibility across groups by comparing model‑generated token attributions with human‑annotated rationales. Experiments with BERT, RoBERTa, and an adversarially trained ADV‑RoBERTa show that the latter improves both classification performance and alignment with human rationales while reducing explanation disparities, and the study highlights that predictive fairness and explanation fairness are related but distinct objectives.

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