Mariana Romanyshyn


2023

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Proceedings of the Second Ukrainian Natural Language Processing Workshop (UNLP)
Mariana Romanyshyn
Proceedings of the Second Ukrainian Natural Language Processing Workshop (UNLP)

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Contextual Embeddings for Ukrainian: A Large Language Model Approach to Word Sense Disambiguation
Yurii Laba | Volodymyr Mudryi | Dmytro Chaplynskyi | Mariana Romanyshyn | Oles Dobosevych
Proceedings of the Second Ukrainian Natural Language Processing Workshop (UNLP)

This research proposes a novel approach to the Word Sense Disambiguation (WSD) task in the Ukrainian language based on supervised fine-tuning of a pre-trained Large Language Model (LLM) on the dataset generated in an unsupervised way to obtain better contextual embeddings for words with multiple senses. The paper presents a method for generating a new dataset for WSD evaluation in the Ukrainian language based on the SUM dictionary. We developed a comprehensive framework that facilitates the generation of WSD evaluation datasets, enables the use of different prediction strategies, LLMs, and pooling strategies, and generates multiple performance reports. Our approach shows 77,9% accuracy for lexical meaning prediction for homonyms.

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The UNLP 2023 Shared Task on Grammatical Error Correction for Ukrainian
Oleksiy Syvokon | Mariana Romanyshyn
Proceedings of the Second Ukrainian Natural Language Processing Workshop (UNLP)

This paper presents the results of the UNLP 2023 shared task, the first Shared Task on Grammatical Error Correction for the Ukrainian language. The task included two tracks: GEC-only and GEC+Fluency. The dataset and evaluation scripts were provided to the participants, and the final results were evaluated on a hidden test set. Six teams submitted their solutions before the deadline, and four teams submitted papers that were accepted to appear in the UNLP workshop proceedings and are referred to in this report. The CodaLab leaderboard is left open for further submissions.