Comparative Analysis of Travel Patterns from Cellular Network Data and an Urban Travel Demand Model

Table 3

Result of the data filtering of the validation dataset. If a day for a certain user (dataday) contains spurious data, both the Google trips and cellular events on that day are removed from the data.

Filter	% spurious	% removed
	Datadays	Google trips	Events
Google: missing data	28.63	45.16	38.46
Google: moving activity	13.26	9.50	10.79
Google: unrealistic speed	17.20	11.82	14.65
Mobile data: large hop	2.98	1.94	3.24
Mobile data: missing data	10.57	10.85	8.66
Total (all filters)	48.32	58.53	55.15