- Marina Litvak, Irina Rabaev, Ricardo Campos 0001, Alípio Mário Jorge, Adam Jatowt, editors, Proceedings of the IACT - The 1st International Workshop on Implicit Author Characterization from Texts for Search and Retrieval held in conjunction with the 46th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2023), Taipei, Taiwan, July 27, 2023. Volume 3477 of CEUR Workshop Proceedings, CEUR-WS.org, 2023.