HiRA: Decoupling Planning and Execution with Hierarchical Reasoning in Deep Search.

@inproceedings{jin-2026-hira, author = {Jiajie Jin and Xiao Zhang and Sunhao Dai and Xiaoxi Li and Jiajie Jin and Xiao Zhang and Weijie Yu and Yuyao Zhang and Sunhao Dai and Xiaoxi Li and Guanting Dong and Weijie Yu and Yuyao Zhang and Zhao Yang and Yutao Zhu and Zhicheng Dou}, editor = {Hannah Bast and Alistair Moffat and Falk Scholer and Marc Najork and Min Zhang and Hannah Bast and Marc Najork and Min Zhang}, title = {{HiRA: Decoupling Planning and Execution with Hierarchical Reasoning in Deep Search}}, booktitle = {{Proceedings of the 49th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2026, MelbourneVICAustralia, July 20-24, 2026}}, pages = {657--667}, publisher = {ACM}, year = {2026}, url = {https://doi.org/10.1145/3805712.3809666}, doi = {https://doi.org/10.1145/3805712.3809666} }