An LDP Compatible Sketch for Securely Approximating Set Intersection Cardinalities. - Pinghui Wang; Yitong Liu; Zhicheng Li 007; Rundong Li 002 (Proc. ACM Manag. Data, 2024)

Half-Xor: A Fully-Dynamic Sketch for Estimating the Number of Distinct Values in Big Tables. - Pinghui Wang; Dongdong Xie 004; Junzhou Zhao; Jinsong Li 004; Zhicheng Li 007; Rundong Li 002; Yang Ren; Jia Di (IEEE Trans. Knowl. Data Eng., 2024)

A Fast, Mergeable, and LDP Compatible Sketch for Counting the Number of Distinct Values in Fully Dynamic Tables. - Zhicheng Li 007; Pinghui Wang; Zeli Lin; Bichun Chen; Dongdong Xie 004 (Proc. ACM Manag. Data, 2025)