Mitigating Translationese Bias in Multilingual LLM-as-a-Judge via Disentangled Information Bottleneck
Large language models (LLMs) have become a standard for multilingual evaluation, yet they exhibit a severe systematic translationese bias. In this paper, translationese bias is characterized as LLMs systematically favoring machine-translated text over human-authored references, particularly in low-resource languages. We attribute this bias to spurious correlations with (i) latent manifold alignment with English and (ii) cross-lingual predictability. To mitigate this bias, we propose DIBJudge, a
Record details
Published: 11 March 2026
Source: arXiv
Category: Research
Topics: Bias & fairness · Safety & alignment
Retrieved: 14 July 2026
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ethics.ai (11 March 2026), “Mitigating Translationese Bias in Multilingual LLM-as-a-Judge via Disentangled Information Bottleneck,” evidence record 7402, https://ethics.ai/record/7402 (originally published by arXiv).
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