BeeParser at MWE-2026 PARSEME 2.0 Subtask 1: Can Cross-Lingual Interactions Improve MWE Identification?

Ahmet Erdem, Oguzhan Karaarslan


Abstract
This paper describes a multilingual system for automatic multiword expression identification for PARSEME 2.0 Subtask 1. We formulate MWE identification as a token-level sequence labeling problem using a BIO tagging scheme and fine-tune XLM-RoBERTa-base on PARSEME 2.0. We mainly investigate cross-lingual interactions on language pairs, and test hypotheses whether using a given language pair for training improves MWE detection performance on both or one of the languages. Then, we apply selected successful language pairs on PARSEME 2.0 MWE Identification task. Experiments are conducted independently for a subset of the languages given in PARSEME 2.0, for a total of 8 languages. Our approach achieves strong token-based and span-based F1 scores across diverse languages, and we observe that training with even distant language pairs may result in improvement on at least one of the languages. We publish our code at https://github.com/ahmeterdem1/parseme-blg505
Anthology ID:
2026.mwe-1.18
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:
144–148
Language:
URL:
https://preview.aclanthology.org/ingest-eacl/2026.mwe-1.18/
DOI:
Bibkey:
Cite (ACL):
Ahmet Erdem and Oguzhan Karaarslan. 2026. BeeParser at MWE-2026 PARSEME 2.0 Subtask 1: Can Cross-Lingual Interactions Improve MWE Identification?. In Proceedings of the 22nd Workshop on Multiword Expressions (MWE 2026), pages 144–148, Rabat, Marocco. Association for Computational Linguistics.
Cite (Informal):
BeeParser at MWE-2026 PARSEME 2.0 Subtask 1: Can Cross-Lingual Interactions Improve MWE Identification? (Erdem & Karaarslan, MWE 2026)
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https://preview.aclanthology.org/ingest-eacl/2026.mwe-1.18.pdf