@inproceedings{balepur-etal-2026-language, title = "Language Models Don{'}t Know What You Want: Evaluating Personalization in Deep Research Needs Real Users", author = "Balepur, Nishant and Hamada, Malachi and Kishore, Varsha and Feldman, Sergey and Singh, Amanpreet and Siangliulue, Pao and Chang, Joseph Chee and Choi, Eunsol and Boyd-Graber, Jordan Lee and Naik, Aakanksha", editor = "Liakata, Maria and Moreira, Viviane P. and Zhang, Jiajun and Jurgens, David", booktitle = "Proceedings of the 64th Annual Meeting of the {A}ssociation for {C}omputational {L}inguistics (Volume 1: Long Papers)", month = jul, year = "2026", address = "San Diego, California, United States", publisher = "Association for Computational Linguistics", url = "https://preview.aclanthology.org/ingest-acl/2026.acl-long.723/", pages = "15910--15944", ISBN = "979-8-89176-390-6" }