@inproceedings{gorodissky-etal-2025-cross,
title = "Cross-Lingual Extractive Question Answering with Unanswerable Questions",
author = "Gorodissky, Yuval and
Sulem, Elior and
Roth, Dan",
editor = "Frermann, Lea and
Stevenson, Mark",
booktitle = "Proceedings of the 14th Joint Conference on Lexical and Computational Semantics (*SEM 2025)",
month = nov,
year = "2025",
address = "Suzhou, China",
publisher = "Association for Computational Linguistics",
url = "https://aclanthology.org/2025.starsem-1.8/",
pages = "100--121",
ISBN = "979-8-89176-340-1",
abstract = "Cross-lingual Extractive Question Answering (EQA) extends standard EQA by requiring models to find answers in passages written in languages different from the questions. The Generalized Cross-Lingual Transfer (G-XLT) task evaluates models' zero-shot ability to transfer question answering capabilities across languages using only English training data. While previous research has primarily focused on scenarios where answers are always present, real-world applications often encounter situations where no answer exists within the given context. This paper introduces an enhanced G-XLT task definition that explicitly handles unanswerable questions, bridging a critical gap in current research. To address this challenge, we present two new datasets: miXQuAD and MLQA-IDK, which address both answerable and unanswerable questions and respectively cover 12 and 7 language pairs. Our study evaluates state-of-the-art large language models using fine-tuning, parameter-efficient techniques, and in-context learning approaches, revealing interesting trade-offs between a smaller fine-tuned model{'}s performance on answerable questions versus a larger in-context learning model{'}s capability on unanswerable questions. We also examine language similarity patterns based on model performance, finding alignments with known language families."
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%0 Conference Proceedings
%T Cross-Lingual Extractive Question Answering with Unanswerable Questions
%A Gorodissky, Yuval
%A Sulem, Elior
%A Roth, Dan
%Y Frermann, Lea
%Y Stevenson, Mark
%S Proceedings of the 14th Joint Conference on Lexical and Computational Semantics (*SEM 2025)
%D 2025
%8 November
%I Association for Computational Linguistics
%C Suzhou, China
%@ 979-8-89176-340-1
%F gorodissky-etal-2025-cross
%X Cross-lingual Extractive Question Answering (EQA) extends standard EQA by requiring models to find answers in passages written in languages different from the questions. The Generalized Cross-Lingual Transfer (G-XLT) task evaluates models’ zero-shot ability to transfer question answering capabilities across languages using only English training data. While previous research has primarily focused on scenarios where answers are always present, real-world applications often encounter situations where no answer exists within the given context. This paper introduces an enhanced G-XLT task definition that explicitly handles unanswerable questions, bridging a critical gap in current research. To address this challenge, we present two new datasets: miXQuAD and MLQA-IDK, which address both answerable and unanswerable questions and respectively cover 12 and 7 language pairs. Our study evaluates state-of-the-art large language models using fine-tuning, parameter-efficient techniques, and in-context learning approaches, revealing interesting trade-offs between a smaller fine-tuned model’s performance on answerable questions versus a larger in-context learning model’s capability on unanswerable questions. We also examine language similarity patterns based on model performance, finding alignments with known language families.
%U https://aclanthology.org/2025.starsem-1.8/
%P 100-121
Markdown (Informal)
[Cross-Lingual Extractive Question Answering with Unanswerable Questions](https://aclanthology.org/2025.starsem-1.8/) (Gorodissky et al., *SEM 2025)
ACL