TransAct: Transformer-based Realtime User Action Model for Recommendation at Pinterest. - Xue Xia; Pong Eksombatchai; Nikil Pancha; Dhruvil Deven Badani; Po-Wei Wang; Neng Gu; Saurabh Vishwas Joshi; Nazanin Farahpour; Zhiyuan Zhang; Andrew Zhai (KDD, 2023)