RIRAG: A Bi-Directional Retrieval-Enhanced Framework for Financial Legal QA in ObliQA Shared Task Xinyan Zhang author Xiaobing Feng author Xiujuan Xu author Zhiliang Zheng author Kai Wu author 2025-01 text Proceedings of the 1st Regulatory NLP Workshop (RegNLP 2025) Tuba Gokhan editor Kexin Wang editor Iryna Gurevych editor Ted Briscoe editor Association for Computational Linguistics Abu Dhabi, UAE conference publication zhang-etal-2025-rirag https://aclanthology.org/2025.regnlp-1.17/ 2025-01 107 113