Enhancing Hallucination Detection through Perturbation-Based Synthetic Data Generation in System Responses

Dongxu Zhang; Varun Gangal; Barrett Lattimer; Yi Yang

ACL 2024findings5 citations

Enhancing Hallucination Detection through Perturbation-Based Synthetic Data Generation in System Responses

Dongxu Zhang, Varun Gangal, Barrett Lattimer, Yi Yang

Abstract

Detecting hallucinations in large language model (LLM) outputs is pivotal, yet traditional fine-tuning for this classification task is impeded by the expensive and quickly outdated annotation process, especially across numerous vertical domains and in the face of rapid LLM advancements. In this study, we introduce an approach that automatically generates both faithful and hallucinated outputs by rewriting system responses. Experimental findings demonstrate that a T5-base model, fine-tuned on our generated dataset, surpasses state-of-the-art zero-shot detectors and existing synthetic generation methods in both accuracy and latency, indicating efficacy of our approach.

BibTeX

@inproceedings{zhang-etal-2024-enhancing-hallucination,
    title = "Enhancing Hallucination Detection through Perturbation-Based Synthetic Data Generation in System Responses",
    author = "Zhang, Dongxu  and
      Gangal, Varun  and
      Lattimer, Barrett  and
      Yang, Yi",
    editor = "Ku, Lun-Wei  and
      Martins, Andre  and
      Srikumar, Vivek",
    booktitle = "Findings of the Association for Computational Linguistics: ACL 2024",
    month = aug,
    year = "2024",
    address = "Bangkok, Thailand",
    publisher = "Association for Computational Linguistics",
    url = "https://aclanthology.org/2024.findings-acl.789/",
    doi = "10.18653/v1/2024.findings-acl.789",
    pages = "13321--13332"
}