An Adaptive Parallel Method for Indexing Transportation Moving Objects

Table 1

Experiment parameters.

Parameter	Experimental value	Defaults
The total area ()	200000 × 200000	—
Query area ()	0.25, 1, 4, 16, 32	4
CPU threads	24	24
GPU stream processors	640	640
Update/query ratio ()	0.25, 0.5, 1, 2, 4, 8, 16	1
Number of spatial objects ()	5, 10, 20, 40	10
Update interval (second)	10, 20, 40, 80, 160	10