activity
20242026
collaborators

7 papers

cs.CL2026

Belief Propagation in LLM World Models: Measuring Strategic Information Bias with Prediction Markets

Mykola Khandoga, Yevhen Kostiuk, Anton Polishko +4

Every information ecosystem produces beliefs that shape strategic decisions. Both human analysts and AI systems inherit the blind spots of their information sources. We show that L…

cs.CY2025

Sovereign Large Language Models: Advantages, Strategy and Regulations

Mykhailo Bondarenko, Sviatoslav Lushnei, Yurii Paniv +4

This report analyzes key trends, challenges, risks, and opportunities associated with the development of Large Language Models (LLMs) globally. It examines national experiences in…

cs.CL2025

The Veln(ia)s is in the Details: Evaluating LLM Judgment on Latvian and Lithuanian Short Answer Matching

Yevhen Kostiuk, Oxana Vitman, Łukasz Gagała +1

In this work, we address the challenge of evaluating large language models (LLMs) on the short answer matching task for Latvian and Lithuanian languages. We introduce novel dataset…

cs.CL2025

Towards Multilingual LLM Evaluation for Baltic and Nordic languages: A study on Lithuanian History

Yevhen Kostiuk, Oxana Vitman, Łukasz Gagała +1

In this work, we evaluated Lithuanian and general history knowledge of multilingual Large Language Models (LLMs) on a multiple-choice question-answering task. The models were teste…

cs.CL2024

Benchmarking Multimodal Models for Ukrainian Language Understanding Across Academic and Cultural Domains

Yurii Paniv, Artur Kiulian, Dmytro Chaplynskyi +4

While the evaluation of multimodal English-centric models is an active area of research with numerous benchmarks, there is a profound lack of benchmarks or evaluation suites for lo…

cs.CL2024

From English-Centric to Effective Bilingual: LLMs with Custom Tokenizers for Underrepresented Languages

Artur Kiulian, Anton Polishko, Mykola Khandoga +10

In this paper, we propose a model-agnostic cost-effective approach to developing bilingual base large language models (LLMs) to support English and any target language. The method…