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        <title>Typology-Aware Multilingual Morphosyntactic Parsing with Joint Abstract Node Modeling</title>
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        <name type="personal">
            <namePart type="given">Maria</namePart>
            <namePart type="family">Liakata</namePart>
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            <namePart type="given">Jiajun</namePart>
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    <abstract>The UniDive 2025 Morphosyntactic Parsing (MSP) shared task introduces a representation unifying dependency structure, morphological features, and unrealized arguments. Unlike Universal Dependencies, MSP encodes abstract nodes (e.g., dropped subjects, implicit pronouns) as labels projected onto content words, which standard UD parsers cannot model. We present a multilingual, typology-aware joint system integrating word-type prediction, content-only parsing, morphological tagging, and an abstract-node component within a single architecture. The model combines the baseline joint framework with typology-conditioned adapters and progressive weighting for abstract supervision. On the MSP test set, our model outperforms the leading submission by 3.23 percentage points in MSLAS, 3.35 in LAS, and 1.78 in FEATS macro F1, demonstrating the effectiveness of typology-sensitive multi-task learning in MSP.</abstract>
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%0 Conference Proceedings
%T Typology-Aware Multilingual Morphosyntactic Parsing with Joint Abstract Node Modeling
%A Acar, Kutay
%A Eryiğit, Gülşen
%Y Liakata, Maria
%Y Moreira, Viviane P.
%Y Zhang, Jiajun
%Y Jurgens, David
%S Proceedings of the 64th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)
%D 2026
%8 July
%I Association for Computational Linguistics
%C San Diego, California, United States
%@ 979-8-89176-390-6
%F acar-eryigit-2026-typology
%X The UniDive 2025 Morphosyntactic Parsing (MSP) shared task introduces a representation unifying dependency structure, morphological features, and unrealized arguments. Unlike Universal Dependencies, MSP encodes abstract nodes (e.g., dropped subjects, implicit pronouns) as labels projected onto content words, which standard UD parsers cannot model. We present a multilingual, typology-aware joint system integrating word-type prediction, content-only parsing, morphological tagging, and an abstract-node component within a single architecture. The model combines the baseline joint framework with typology-conditioned adapters and progressive weighting for abstract supervision. On the MSP test set, our model outperforms the leading submission by 3.23 percentage points in MSLAS, 3.35 in LAS, and 1.78 in FEATS macro F1, demonstrating the effectiveness of typology-sensitive multi-task learning in MSP.
%U https://aclanthology.org/2026.acl-long.2212/
%P 47907-47920

Markdown (Informal)

[Typology-Aware Multilingual Morphosyntactic Parsing with Joint Abstract Node Modeling](https://aclanthology.org/2026.acl-long.2212/) (Acar & Eryiğit, ACL 2026)

• Typology-Aware Multilingual Morphosyntactic Parsing with Joint Abstract Node Modeling (Acar & Eryiğit, ACL 2026)

ACL

• Kutay Acar and Gülşen Eryiğit. 2026. Typology-Aware Multilingual Morphosyntactic Parsing with Joint Abstract Node Modeling. In Proceedings of the 64th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers), pages 47907–47920, San Diego, California, United States. Association for Computational Linguistics.