arXiv Open Access 2025

GRDD+: An Extended Greek Dialectal Dataset with Cross-Architecture Fine-tuning Evaluation

Stergios Chatzikyriakidis Dimitris Papadakis Sevasti-Ioanna Papaioannou Erofili Psaltaki

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Abstrak

We present an extended Greek Dialectal Dataset (GRDD+) 1that complements the existing GRDD dataset with more data from Cretan, Cypriot, Pontic and Northern Greek, while we add six new varieties: Greco-Corsican, Griko (Southern Italian Greek), Maniot, Heptanesian, Tsakonian, and Katharevusa Greek. The result is a dataset with total size 6,374,939 words and 10 varieties. This is the first dataset with such variation and size to date. We conduct a number of fine-tuning experiments to see the effect of good quality dialectal data on a number of LLMs. We fine-tune three model architectures (Llama-3-8B, Llama-3.1-8B, Krikri-8B) and compare the results to frontier models (Claude-3.7-Sonnet, Gemini-2.5, ChatGPT-5).

Topik & Kata Kunci

cs.CL

Penulis (4)

Stergios Chatzikyriakidis

Dimitris Papadakis

Sevasti-Ioanna Papaioannou

Erofili Psaltaki

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Chatzikyriakidis, S., Papadakis, D., Papaioannou, S., Psaltaki, E. (2025). GRDD+: An Extended Greek Dialectal Dataset with Cross-Architecture Fine-tuning Evaluation. https://arxiv.org/abs/2511.03772

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Informasi Jurnal

Tahun Terbit: 2025
Bahasa: en
Sumber Database: arXiv
Akses: Open Access ✓