XLQA: A Benchmark for Locale-Aware Multilingual Open-Domain Question Answering

• URL: http://arxiv.org/abs/2508.16139v1
• Date: Fri, 22 Aug 2025 07:00:13 GMT
• Title: XLQA: A Benchmark for Locale-Aware Multilingual Open-Domain Question Answering
• Authors: Keon-Woo Roh, Yeong-Joon Ju, Seong-Whan Lee,
• Abstract summary: Large Language Models (LLMs) have shown significant progress in Open-domain question answering (ODQA)<n>Most evaluations focus on English and assume locale-invariant answers across languages.<n>We introduce XLQA, a novel benchmark explicitly designed for locale-sensitive multilingual ODQA.
• Score: 48.913480244527925
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Large Language Models (LLMs) have shown significant progress in Open-domain question answering (ODQA), yet most evaluations focus on English and assume locale-invariant answers across languages. This assumption neglects the cultural and regional variations that affect question understanding and answer, leading to biased evaluation in multilingual benchmarks. To address these limitations, we introduce XLQA, a novel benchmark explicitly designed for locale-sensitive multilingual ODQA. XLQA contains 3,000 English seed questions expanded to eight languages, with careful filtering for semantic consistency and human-verified annotations distinguishing locale-invariant and locale-sensitive cases. Our evaluation of five state-of-the-art multilingual LLMs reveals notable failures on locale-sensitive questions, exposing gaps between English and other languages due to a lack of locale-grounding knowledge. We provide a systematic framework and scalable methodology for assessing multilingual QA under diverse cultural contexts, offering a critical resource to advance the real-world applicability of multilingual ODQA systems. Our findings suggest that disparities in training data distribution contribute to differences in both linguistic competence and locale-awareness across models.

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