路网移动对象聚集索引技术
冯钧1, 史涯晴1,2, 唐志贤1, 芮彩华1

Aggregation index technique of moving objects in road networks
FENG Jun1, SHI Ya-qing1,2, TANG Zhi-xian1, RUI Cai-hua1
图5 DS和DSD+随机产生查询的平均相对误差比较
Fig.5 Average relative error comparison between DS and DSD+ while generate queries randomly