Portrait of Yurii Laba

I am a PhD candidate at Ukrainian Catholic University and an AI Research Scientist at MacPaw.

My research focuses on multilingual and multimodal NLP, particularly on how models represent lexical meaning in Ukrainian. I build datasets and benchmarks for word-sense disambiguation and develop data-efficient methods for adapting sentence and vision–language models when annotated data are limited. I also study memory systems for AI agents, including how agents decide what to retain and maintain useful context over time.

Contact

My email is laba@ucu.edu.ua. You can also find me on GitHub, Hugging Face, and ACL Anthology.

Research

2026 CoNLL

From Sparse to Sense-Grounded: Wikipedia Training for Ukrainian Visual-WSD.

Yurii Laba, Rostyslav O. Hryniv

We extend the Ukrainian Visual-WSD benchmark and introduce Wikipedia-derived training methods for sense-grounded multimodal learning.

2025 EMNLP

From Benchmark to Better Embeddings: Leveraging Synonym Substitution to Enhance Multimodal Models in Ukrainian.

Volodymyr Mudryi, Yurii Laba

We study the robustness of Ukrainian text–image retrieval under synonym substitutions and propose synonym-augmented fine-tuning.

2024 UNLP

Ukrainian Visual Word Sense Disambiguation Benchmark.

Yurii Laba, Yaryna Mohytych, Ivanna Rohulia, Halyna Kyryleyza, Hanna Dydyk-Meush, Oles Dobosevych, Rostyslav Hryniv

We introduce a benchmark for matching an ambiguous Ukrainian word in minimal context to its correct visual sense.

2023 UNLP

Contextual Embeddings for Ukrainian: A Large Language Model Approach to Word Sense Disambiguation.

Yurii Laba, Volodymyr Mudryi, Dmytro Chaplynskyi, Mariana Romanyshyn, Oles Dobosevych

We propose an LLM-based approach for Ukrainian word sense disambiguation and contextual embeddings.

Updates

Visited ACL and CoNLL in San Diego and presented From Sparse to Sense-Grounded at CoNLL 2026. I also met researchers working on Visual-WSD and discussed applying the results to the next version of the Ukrainian Mamay language model.

Attended ACM Multimedia 2025 in Dublin with the MacPaw AI team, exploring recent work on robust multimodal models, knowledge distillation, multimodal evaluation, and on-device AI.