Con-ReCall: Detecting Pre-training Data in LLMs via Contrastive Decoding Cheng Wang author Yiwei Wang author Bryan Hooi author Yujun Cai author Nanyun Peng author Kai-Wei Chang author 2025-01 text Proceedings of the 31st International Conference on Computational Linguistics Owen Rambow editor Leo Wanner editor Marianna Apidianaki editor Hend Al-Khalifa editor Barbara Di Eugenio editor Steven Schockaert editor Association for Computational Linguistics Abu Dhabi, UAE conference publication wang-etal-2025-con https://aclanthology.org/2025.coling-main.68/ 2025-01 1013 1026