Analyzing the Understanding of Morphologically Complex Words in Large Language Models

Marion Weller-Di Marco, Alexander Fraser


Abstract
We empirically study the ability of a Large Language Model (gpt-3.5-turbo-instruct) to understand morphologically complex words. In our experiments, we looked at a variety of tasks to analyse German compounds with regard to compositional word formation and derivation, such as identifying the head noun of existing and novel compounds, identifying the shared verb stem between two words, or recognizing words constructed with inappropriately used derivation morphemes as invalid. Our results show that the language model is generally capable of solving most tasks, except for the task of identifying ill-formed word forms. While the model demonstrated a good overall understanding of complex words and their word-internal structure, the results also suggest that there is no formal knowledge of derivational rules, but rather an interpretation of the observed word parts to derive the meaning of a word.
Anthology ID:
2024.lrec-main.90
Volume:
Proceedings of the 2024 Joint International Conference on Computational Linguistics, Language Resources and Evaluation (LREC-COLING 2024)
Month:
May
Year:
2024
Address:
Torino, Italia
Editors:
Nicoletta Calzolari, Min-Yen Kan, Veronique Hoste, Alessandro Lenci, Sakriani Sakti, Nianwen Xue
Venues:
LREC | COLING
SIG:
Publisher:
ELRA and ICCL
Note:
Pages:
1009–1020
Language:
URL:
https://aclanthology.org/2024.lrec-main.90
DOI:
Bibkey:
Cite (ACL):
Marion Weller-Di Marco and Alexander Fraser. 2024. Analyzing the Understanding of Morphologically Complex Words in Large Language Models. In Proceedings of the 2024 Joint International Conference on Computational Linguistics, Language Resources and Evaluation (LREC-COLING 2024), pages 1009–1020, Torino, Italia. ELRA and ICCL.
Cite (Informal):
Analyzing the Understanding of Morphologically Complex Words in Large Language Models (Weller-Di Marco & Fraser, LREC-COLING 2024)
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PDF:
https://aclanthology.org/2024.lrec-main.90.pdf