UMUTeam at SemEval-2024 Task 6: Leveraging Zero-Shot Learning for Detecting Hallucinations and Related Observable Overgeneration Mistakes

Ronghao Pan, José Antonio García-díaz, Tomás Bernal-beltrán, Rafael Valencia-garcía


Abstract
In these working notes we describe the UMUTeam’s participation in SemEval-2024 shared task 6, which aims at detecting grammatically correct output of Natural Language Generation with incorrect semantic information in two different setups: model-aware and model-agnostic tracks. The task is consists of three subtasks with different model setups. Our approach is based on exploiting the zero-shot classification capability of the Large Language Models LLaMa-2, Tulu and Mistral, through prompt engineering. Our system ranked eighteenth in the model-aware setup with an accuracy of 78.4% and 29th in the model-agnostic setup with an accuracy of 76.9333%.
Anthology ID:
2024.semeval-1.98
Volume:
Proceedings of the 18th International Workshop on Semantic Evaluation (SemEval-2024)
Month:
June
Year:
2024
Address:
Mexico City, Mexico
Editors:
Atul Kr. Ojha, A. Seza Doğruöz, Harish Tayyar Madabushi, Giovanni Da San Martino, Sara Rosenthal, Aiala Rosá
Venue:
SemEval
SIG:
SIGLEX
Publisher:
Association for Computational Linguistics
Note:
Pages:
675–681
Language:
URL:
https://aclanthology.org/2024.semeval-1.98
DOI:
10.18653/v1/2024.semeval-1.98
Bibkey:
Cite (ACL):
Ronghao Pan, José Antonio García-díaz, Tomás Bernal-beltrán, and Rafael Valencia-garcía. 2024. UMUTeam at SemEval-2024 Task 6: Leveraging Zero-Shot Learning for Detecting Hallucinations and Related Observable Overgeneration Mistakes. In Proceedings of the 18th International Workshop on Semantic Evaluation (SemEval-2024), pages 675–681, Mexico City, Mexico. Association for Computational Linguistics.
Cite (Informal):
UMUTeam at SemEval-2024 Task 6: Leveraging Zero-Shot Learning for Detecting Hallucinations and Related Observable Overgeneration Mistakes (Pan et al., SemEval 2024)
Copy Citation:
PDF:
https://aclanthology.org/2024.semeval-1.98.pdf
Supplementary material:
 2024.semeval-1.98.SupplementaryMaterial.txt
Supplementary material:
 2024.semeval-1.98.SupplementaryMaterial.zip