@inproceedings{cieslak-sredniawa-2026-leakage, title = "Leakage-Aware User-Level {ADHD} Signal Classification from Social Media: When Graph Aggregation Helps, and When It Does Not", author = "Cie{\'s}lak, Daniel and {\'S}redniawa, W{\l}adys{\l}aw", editor = "T.Y.S.S., Santosh and Rodriguez, Juan Diego and de Gibert, Ona", booktitle = "Proceedings of the 64th Annual Meeting of the {A}ssociation for {C}omputational {L}inguistics ({ACL} 2026)", month = jul, year = "2026", address = "San Diego, California, United States", publisher = "Association for Computational Linguistics", url = "https://preview.aclanthology.org/ingest-acl/2026.acl-srw.47/", pages = "527--536", ISBN = "979-8-89176-393-7" }