2 papers
cs.DS2026
Efficient and Secure Range Counting over Distributed Geographic Data with Query Range Protection
Haoxin Yang, Pinghui Wang, Zhe Hou +8
Range counting is a core primitive in geographic information systems. When data is distributed across multiple organizations, conducting range counting raises substantial privacy c…
cs.DB2024
QSketch: An Efficient Sketch for Weighted Cardinality Estimation in Streams
Yiyan Qi, Rundong Li, Pinghui Wang +2
Estimating cardinality, i.e., the number of distinct elements, of a data stream is a fundamental problem in areas like databases, computer networks, and information retrieval. This…