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Vytautas Magnus University

Academic institutioneurope · lt
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Research library2linked papers
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Selected work

Representative Papers

Localizing AI: Evaluating Open-Weight Language Models for Languages of Baltic States

Jan 07, 2025

This study addresses the challenge of securely deploying large language models (LLMs) for low-resource Baltic languages—Lithuanian, Latvian, and Estonian—in privacy- and security-sensitive domains such as government and defense. We systematically evaluate open-source, locally deployable multilingual LLMs—including Llama 3, Gemma 2, Phi, and NeMo—across machine translation, multiple-choice question answering, and free-text generation. We identify pervasive token-level hallucinations (average error rate ≥5%, i.e., one error per 20 tokens), demonstrating that high translation accuracy does not guarantee semantic reliability. Through FP16/INT4 precision analysis and a custom evaluation benchmark, we find Gemma 2 approaches commercial-model performance, yet all models exhibit critical deficiencies requiring language-specific optimization. Our work establishes the first empirical benchmark for LLM deployment in privacy-critical, low-resource language settings and provides concrete, actionable pathways for improving linguistic fidelity and trustworthiness.

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Recent publications

Latest Papers

Localizing AI: Evaluating Open-Weight Language Models for Languages of Baltic States

Jan 07, 2025

This study addresses the challenge of securely deploying large language models (LLMs) for low-resource Baltic languages—Lithuanian, Latvian, and Estonian—in privacy- and security-sensitive domains such as government and defense. We systematically evaluate open-source, locally deployable multilingual LLMs—including Llama 3, Gemma 2, Phi, and NeMo—across machine translation, multiple-choice question answering, and free-text generation. We identify pervasive token-level hallucinations (average error rate ≥5%, i.e., one error per 20 tokens), demonstrating that high translation accuracy does not guarantee semantic reliability. Through FP16/INT4 precision analysis and a custom evaluation benchmark, we find Gemma 2 approaches commercial-model performance, yet all models exhibit critical deficiencies requiring language-specific optimization. Our work establishes the first empirical benchmark for LLM deployment in privacy-critical, low-resource language settings and provides concrete, actionable pathways for improving linguistic fidelity and trustworthiness.

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