Efficient block-based sampling algorithm for aggregation query processing on duplicate charged records
PAN Mingyu, ZHANG Lu, LONG Guobiao, LI Xianglong, MA Dongxue, XU Liang
Journal of Computer Applications . 2018, (6): 1596 -1600 .  DOI: 10.11772/j.issn.1001-9081.2017112632