多语言事实核查新挑战：从溯源到生成全链条推进
The CLEF-2026 CheckThat! Lab: Advancing Multilingual Fact-Checking
- 构建多语言事实核查流水线，覆盖来源检索、数值时间类断言验证与完整核查文章生成
- 新增推理机制处理数值与时间类声明，支持跨语言文档级与片段级生成任务
- 适合关注多语言信息真实性、自动核查系统与生成式AI应用的研究者
CheckThat! 实验室致力于推动多语言在线传播中对抗虚假信息与操纵行为的技术发展。早期聚焦于验证流程的核心任务（是否值得查、证据检索、验证判断），近三年逐步扩展至相关任务。2026年版再次以验证流程为核心，设立三项任务：任务1为科学网络断言的来源检索（延续2025年工作）；任务2针对数值与时间类断言的事实核查，引入推理能力（较2025年升级）；任务3则拓展验证流程，实现完整事实核查文章的生成。这些任务涵盖具有挑战性的分类、检索及文档级、片段级生成问题，均在多语言环境下进行。
原文摘要 · Abstract (English)
The CheckThat! lab aims to advance the development of innovative technologies combating disinformation and manipulation efforts in online communication across a multitude of languages and platforms. While in early editions the focus has been on core tasks of the verification pipeline (check-worthiness, evidence retrieval, and verification), in the past three editions, the lab added additional tasks linked to the verification process. In this year's edition, the verification pipeline is at the center again with the following tasks: Task 1 on source retrieval for scientific web claims (a follow-up of the 2025 edition), Task 2 on fact-checking numerical and temporal claims, which adds a reasoning component to the 2025 edition, and Task 3, which expands the verification pipeline with generation of full-fact-checking articles. These tasks represent challenging classification and retrieval problems as well as generation challenges at the document and span level, including multilingual settings.
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