Fine-Tuning GPT-3 for Synthetic Danish News Generation

Mina Almasi, Anton Schiønning


Abstract
While GPT-3 has garnered significant attention for its capabilities in natural language generation, research on its use outside of English is still relatively limited. We focus on how GPT-3 can be fine-tuned for generating synthetic news articles in a low-resource language, namely Danish. The model’s performance is evaluated on the dimensions of human and machine detection in two separate experiments. When presented with either a real or GPT-3 generated news article, human participants achieve a 58.1% classification accuracy. Contrarily, a fine-tuned BERT classifier obtains a 92.7% accuracy on the same task. This discrepancy likely pertains to the fine-tuned GPT-3 model oversampling high-likelihood tokens in its text generation. Although this is undetectable to the human eye, it leaves a statistical discrepancy for machine classifiers to detect. We address how decisions in the experimental design favoured the machine classifiers over the human evaluators, and whether the produced synthetic articles are applicable in a real-world context.
Anthology ID:
2023.inlg-main.4
Volume:
Proceedings of the 16th International Natural Language Generation Conference
Month:
September
Year:
2023
Address:
Prague, Czechia
Editors:
C. Maria Keet, Hung-Yi Lee, Sina Zarrieß
Venues:
INLG | SIGDIAL
SIG:
SIGGEN
Publisher:
Association for Computational Linguistics
Note:
Pages:
54–68
Language:
URL:
https://aclanthology.org/2023.inlg-main.4
DOI:
10.18653/v1/2023.inlg-main.4
Bibkey:
Cite (ACL):
Mina Almasi and Anton Schiønning. 2023. Fine-Tuning GPT-3 for Synthetic Danish News Generation. In Proceedings of the 16th International Natural Language Generation Conference, pages 54–68, Prague, Czechia. Association for Computational Linguistics.
Cite (Informal):
Fine-Tuning GPT-3 for Synthetic Danish News Generation (Almasi & Schiønning, INLG-SIGDIAL 2023)
Copy Citation:
PDF:
https://preview.aclanthology.org/nschneid-patch-3/2023.inlg-main.4.pdf