TY - RPRT TI - Optimal Client Sampling in Federated Learning with Client-level Heterogeneous Differential Privacy AU - Xu, Jiahao [Univ. of Nevada, Reno, NV (United States)] (ORCID:000000024888252X) AU - Hu, Rui [Univ. of Nevada, Reno, NV (United States)] AU - Kotevska, Olivera [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)] (ORCID:0000000316772243) PY - 2026 DO - 10.1109/jiot.2026.3661913 UR - https://www.osti.gov/biblio/3018111 ID - 3018111 ER -