UPB at IberLEF-2023 AuTexTification: Detection of Machine-Generated Text using Transformer Ensembles

• URL: http://arxiv.org/abs/2308.01408v1
• Date: Wed, 2 Aug 2023 20:08:59 GMT
• Title: UPB at IberLEF-2023 AuTexTification: Detection of Machine-Generated Text using Transformer Ensembles
• Authors: Andrei-Alexandru Preda, Dumitru-Clementin Cercel, Traian Rebedea, Costin-Gabriel Chiru
• Abstract summary: This paper describes the solutions submitted by the UPB team to the AuTexTification shared task, featured as part of IberLEF-2023. Our best-performing model achieved macro F1-scores of 66.63% on the English dataset and 67.10% on the Spanish dataset.
• Score: 0.5324802812881543
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: This paper describes the solutions submitted by the UPB team to the AuTexTification shared task, featured as part of IberLEF-2023. Our team participated in the first subtask, identifying text documents produced by large language models instead of humans. The organizers provided a bilingual dataset for this subtask, comprising English and Spanish texts covering multiple domains, such as legal texts, social media posts, and how-to articles. We experimented mostly with deep learning models based on Transformers, as well as training techniques such as multi-task learning and virtual adversarial training to obtain better results. We submitted three runs, two of which consisted of ensemble models. Our best-performing model achieved macro F1-scores of 66.63% on the English dataset and 67.10% on the Spanish dataset.

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