US Patent 8412667 Comparing and identifying similar tracks

The location of a user over time is monitored by a mobile device. The monitored locations are organized into tracks that describe a path or route that the user took over a period of time. Segments that correspond to each of the tracks are determined. The segments may correspond to road on a map, or some other standardization. The segments are associated with their corresponding tracks, and used to identify similar tracks or to generate similarity scores for pairs of tracks.