arXiv AI By Junwei Yao, Yongxi Zhou, Zike Yang, Zhijun Wang, Jianan Liu, Yanxian Chen, Wenbo Ye

One Confidence Threshold, Unequal Coverage: Language Gaps in Typed Decision Interfaces and How Translating Inputs Reduces Them

Read the original on arXiv AI →

The study evaluates whether a single confidence threshold in typed decision interfaces treats all languages equally. Using 1,000 items in 51 languages across three vendors, it finds that English consistently achieves higher coverage—clearing the 0.9 threshold 8.6–11.7 percentage points more often than other languages—despite similar accuracy. Even when thresholds are re‑weighted or calibrated per language, the gap persists, and translating inputs into English reduces but does not eliminate it. The authors recommend reporting per‑language coverage at the operating threshold.

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