ARHN: Answer-Centric Relabeling of Hard Negatives with Open-Source LLMs for Dense Retrieval.

@inproceedings{choi-2026-arhn, author = {Hyewon Choi and Xiaomeng Song and Renfeng Ma and Stanley Jungkyu Choi and Hongtao Tian and Jooyoung Choi and Hyewon Choi and Xiaomeng Song and Hansol Jang and Zhumin Chen and Hongtao Tian and Jooyoung Choi and Hyun Kim and Zhaochun Ren and Hansol Jang and Zhumin Chen and Chulmin Yun and Maarten de Rijke and Hyun Kim and Zhaochun Ren and Changwook Jun and Chulmin Yun and Maarten de Rijke and Renfeng Ma and Stanley Jungkyu Choi}, 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 = {{ARHN: Answer-Centric Relabeling of Hard Negatives with Open-Source LLMs for Dense Retrieval}}, booktitle = {{Proceedings of the 49th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2026, MelbourneVICAustralia, July 20-24, 2026}}, pages = {213--222}, publisher = {ACM}, year = {2026}, url = {https://doi.org/10.1145/3805712.3809628}, doi = {https://doi.org/10.1145/3805712.3809628} }