@inproceedings{chowdhury-etal-2025-fact5,
    title = "{FACT}5: A Novel Benchmark and Pipeline for Nuanced Fact-Checking of Complex Statements",
    author = "Chowdhury, Shayan  and
      Fang, Sunny  and
      Muresan, Smaranda",
    editor = "Akhtar, Mubashara  and
      Aly, Rami  and
      Christodoulopoulos, Christos  and
      Cocarascu, Oana  and
      Guo, Zhijiang  and
      Mittal, Arpit  and
      Schlichtkrull, Michael  and
      Thorne, James  and
      Vlachos, Andreas",
    booktitle = "Proceedings of the Eighth Fact Extraction and VERification Workshop (FEVER)",
    month = jul,
    year = "2025",
    address = "Vienna, Austria",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/display_plenaries/2025.fever-1.8/",
    pages = "101--117",
    ISBN = "978-1-959429-53-1",
    abstract = "Fact-checking complex statements is integral to combating misinformation, but manual approaches are time-consuming, while automated approaches often oversimplify truthfulness into binary classifications and rely on resource-intensive models. This paper introduces: (i) FACT5, a curated dataset of 150 real-world statements with five ordinal classes of truthfulness, designed to capture the nuanced nature of factual accuracy and (ii) an open-source end-to-end pipeline using large language models (LLMs) that decomposes statements into atomic claims, generates targeted questions, retrieves evidence from the web, and produces justified verdicts. We evaluate our pipeline on FACT5 using Mistral-7B-v0.3 and Google{'}s Gemini-1.5-Flash. Our findings demonstrate significant improvements over baseline LLM performance, with Mistral-7B showing a 71.9{\%} reduction in MSE for pass@3 evaluation. The FACT5 dataset, pipeline implementation, and evaluation framework are anonymized and provided at https://github.com/shayantist/FACT5/, and a demo of the pipeline can be interacted with at https://fact5check.streamlit.app/."
}