Team INSAntive at SlavicNLP-2025 Shared Task: Data Augmentation and Enhancement via Explanations for Persuasion Technique Classification

Yutong Wang, Diana Nurbakova, Sylvie Calabretto


Abstract
This study investigates the automatic detection and classification of persuasion techniques across five Slavic languages (Bulgarian, Croatian, Polish, Russian, and Slovenian), addressing two subtasks: binary detection of persuasion techniques in text fragments (Subtask 1) and multi-label classification of specific technique types (Subtask 2). To overcome limited training resources, we implemented a multi-level cross-lingual augmentation strategy utilizing GPT-4o for non-Slavic to Slavic conversion and intra-Slavic language migration. We employ XLM-RoBERTa architecture with two LLM-enhanced variants that use explanations to improve classification performance. The experimental results demonstrate varied performance across languages and tasks, with our approach achieving first place in the Russian subtask 1 and second place in Bulgarian subtask 2, confirming that larger parameter models excel in complex classification tasks. These findings highlight the significant potential of LLMs for enhancing multilingual classification and the persistent difficulties in ensuring consistent cross-linguistic performance.
Anthology ID:
2025.bsnlp-1.22
Volume:
Proceedings of the 10th Workshop on Slavic Natural Language Processing (Slavic NLP 2025)
Month:
July
Year:
2025
Address:
Vienna, Austria
Editors:
Jakub Piskorski, Pavel Přibáň, Preslav Nakov, Roman Yangarber, Michal Marcinczuk
Venues:
BSNLP | WS
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
190–201
Language:
URL:
https://preview.aclanthology.org/acl25-workshop-ingestion/2025.bsnlp-1.22/
DOI:
Bibkey:
Cite (ACL):
Yutong Wang, Diana Nurbakova, and Sylvie Calabretto. 2025. Team INSAntive at SlavicNLP-2025 Shared Task: Data Augmentation and Enhancement via Explanations for Persuasion Technique Classification. In Proceedings of the 10th Workshop on Slavic Natural Language Processing (Slavic NLP 2025), pages 190–201, Vienna, Austria. Association for Computational Linguistics.
Cite (Informal):
Team INSAntive at SlavicNLP-2025 Shared Task: Data Augmentation and Enhancement via Explanations for Persuasion Technique Classification (Wang et al., BSNLP 2025)
Copy Citation:
PDF:
https://preview.aclanthology.org/acl25-workshop-ingestion/2025.bsnlp-1.22.pdf