IPN at MWE-2026 PARSEME 2.0 Subtask 1: MWE Identification via Related Languages and Harnessing Thinking Mode

Anna Hülsing, Noah-Manuel Michael, Daniel Mora Melanchthon, Andrea Horbach


Abstract
We present IPN, our system for Subtask 1 of the PARSEME 2.0 Shared Task, which targets the identification of MWEs in 17 languages. Overall, IPN outperformed a much larger-parameter baseline model, yet a performance gap to the top-performing systems remains. To better understand these results, we investigate Qwen3-32B’s suitability for mono-, cross- and multilingual MWE identification. We also explore whether this model benefits from prepending automatically generated thinking data to the gold label during instruction-tuning. We find that target language data is vital for instruction-tuning. Prepending generated thinking data to a subset of the training data slightly improves performance for two out of three languages, but more detailed evaluation is required.
Anthology ID:
2026.mwe-1.24
Volume:
Proceedings of the 22nd Workshop on Multiword Expressions (MWE 2026)
Month:
March
Year:
2026
Address:
Rabat, Marocco
Editors:
Atul Kr. Ojha, Verginica Barbu Mititelu, Mathieu Constant, Ivelina Stoyanova, A. Seza Doğruöz, Alexandre Rademaker
Venues:
MWE | WS
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
177–186
Language:
URL:
https://aclanthology.org/2026.mwe-1.24/
DOI:
Bibkey:
Cite (ACL):
Anna Hülsing, Noah-Manuel Michael, Daniel Mora Melanchthon, and Andrea Horbach. 2026. IPN at MWE-2026 PARSEME 2.0 Subtask 1: MWE Identification via Related Languages and Harnessing Thinking Mode. In Proceedings of the 22nd Workshop on Multiword Expressions (MWE 2026), pages 177–186, Rabat, Marocco. Association for Computational Linguistics.
Cite (Informal):
IPN at MWE-2026 PARSEME 2.0 Subtask 1: MWE Identification via Related Languages and Harnessing Thinking Mode (Hülsing et al., MWE 2026)
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PDF:
https://aclanthology.org/2026.mwe-1.24.pdf