Awakening Dormant Users: Generative Recommendation with Counterfactual Functional Role Reasoning. - Huishi Luo; Shuokai Li; Hanchen Yang; Zhongbo Sun; Haojie Ding; Boheng Zhang; Zijia Cai; Renliang Qian; Fan Yang; Tingting Gao; Chenyi Lei; Wenwu Ou; et al. (CoRR, 2026)