Think When Needed: Model-Aware Reasoning Routing for LLM-based Ranking.

@inproceedings{guo-2026-think, author = {Huizhong Guo and Tianjun Wei and Dongxia Wang and Yingpeng Du and Ziyan Wang and Jie Zhang and Zhu Sun}, 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 = {{Think When Needed: Model-Aware Reasoning Routing for LLM-based Ranking}}, booktitle = {{Proceedings of the 49th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2026, MelbourneVICAustralia, July 20-24, 2026}}, pages = {471--481}, publisher = {ACM}, year = {2026}, url = {https://doi.org/10.1145/3805712.3809709}, doi = {https://doi.org/10.1145/3805712.3809709} }