DUTtask10 at SemEval-2025 Task 10: ThoughtFlow: Hierarchical Narrative Classification via Stepwise Prompting

Du Py, Huayang Li, Liang Yang, Zhang Shaowu


Abstract
This paper describes our system for SemEval-2025 Task 10: Hierarchical Narrative Classification. We propose a two-step hierarchical approach that combines generative reasoning and fine-tuning for sub-narrative classification. The main techniques of our system are: 1) leveraging a large pre-trained model to generate a reasoning process for better context understanding, 2) fine-tuning the model for precise sub-narrative categorization, 3) using a multi-label classification strategy for more accurate sub-narrative identification, and 4) incorporating data augmentation to increase the diversity and robustness of the training data. Our system ranked 1st in Subtask 2 for Hindi, achieving an F1 macro coarse score of 0.56900 and an F1 samples score of 0.53500. The results demonstrate the effectiveness of our approach in classifying narratives and sub-narratives in a multilingual setting, with the additional benefit of enhanced model performance through data augmentation.
Anthology ID:
2025.semeval-1.59
Volume:
Proceedings of the 19th International Workshop on Semantic Evaluation (SemEval-2025)
Month:
July
Year:
2025
Address:
Vienna, Austria
Editors:
Sara Rosenthal, Aiala Rosá, Debanjan Ghosh, Marcos Zampieri
Venues:
SemEval | WS
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
424–430
Language:
URL:
https://preview.aclanthology.org/corrections-2025-08/2025.semeval-1.59/
DOI:
Bibkey:
Cite (ACL):
Du Py, Huayang Li, Liang Yang, and Zhang Shaowu. 2025. DUTtask10 at SemEval-2025 Task 10: ThoughtFlow: Hierarchical Narrative Classification via Stepwise Prompting. In Proceedings of the 19th International Workshop on Semantic Evaluation (SemEval-2025), pages 424–430, Vienna, Austria. Association for Computational Linguistics.
Cite (Informal):
DUTtask10 at SemEval-2025 Task 10: ThoughtFlow: Hierarchical Narrative Classification via Stepwise Prompting (Py et al., SemEval 2025)
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PDF:
https://preview.aclanthology.org/corrections-2025-08/2025.semeval-1.59.pdf