GNNRI: detecting anomalous social network users through heterogeneous information networks and user relevance exploration. - Yangyang Li; Xinyue Sun; Renyu Yang; Xiaoyang Sun; Shiru Chen; Shuhai Wang; Md. Zakirul Alam Bhuiyan; Albert Y. Zomaya; Jie Xu 007 (Int. J. Mach. Learn. Cybern., 2025)