Test with starting point at Somerton using default (linear) matching algorithm and cache size 48

Cache is built using a square with sides 20 km. User's path has steps of (2000, 2000) metres, with a total of 11 retrievals. Amount of look-ahead (both E and N) is 20km. Cache size is 48. (Size is set as a fixed value, derived from original size of 129).

Point furthest from the centre of cache (37000000, 15000000) is 3603774, 1364107; distance away is: 16.7048 kilometres.

Results for Somerton (OS 350,130) using default (linear) algorithm and 20 look-ahead
Threshold Total benchmark retrievals Retrievals lost
99% 1 1
98% 15 6
96% 142 73
93% 446 232

Default matching algorithm used was: (version pjb Jan 6b 2003) .

Commentary on this starting point: the cache is centred on non-prime tourist area, but there are prime areas nearby (10 to 30 km).