A Learnable Skill Combination Strategy for Multi-task Learning in Natural Language Understanding

Zhe Yang, Yi Huang, Yaqin Chen, Mengfei Guo, Xiaoting Wu, Junlan Feng


Abstract
In the realm of domain-specific natural language understanding (NLU) tasks, acquiring high-quality labeled data is often arduous, thereby posing significant challenges for effective model training. Multi-task learning (MTL) addresses these limitations by jointly optimizing multiple tasks within a unified framework. In this paper, we introduce a novel sparse NLU multi-task learning framework that decomposes the language model into modular skill components and employs a dynamic, learnable skill-combination mechanism to adaptively handle diverse tasks. Extensive experiments on benchmark NLU datasets demonstrate that our proposed method surpasses conventional multi-task learning approaches in performance.
Anthology ID:
2026.findings-acl.1886
Volume:
Findings of the Association for Computational Linguistics: ACL 2026
Month:
July
Year:
2026
Address:
San Diego, California, United States
Editors:
Maria Liakata, Viviane P. Moreira, Jiajun Zhang, David Jurgens
Venue:
Findings
SIG:
Publisher:
Association for Computational Linguistics
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Pages:
37839–37845
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URL:
https://preview.aclanthology.org/ingest-acl/2026.findings-acl.1886/
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Cite (ACL):
Zhe Yang, Yi Huang, Yaqin Chen, Mengfei Guo, Xiaoting Wu, and Junlan Feng. 2026. A Learnable Skill Combination Strategy for Multi-task Learning in Natural Language Understanding. In Findings of the Association for Computational Linguistics: ACL 2026, pages 37839–37845, San Diego, California, United States. Association for Computational Linguistics.
Cite (Informal):
A Learnable Skill Combination Strategy for Multi-task Learning in Natural Language Understanding (Yang et al., Findings 2026)
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https://preview.aclanthology.org/ingest-acl/2026.findings-acl.1886.pdf
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