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

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 10km. Cache size is 33.

Threshold for building the cache was 93%.

Point furthest from the centre of cache (36000000, 14000000) is 3778200, 1482520; distance away is: 19.598 kilometres.

Results for Somerton (OS 350,130) using default (linear) algorithm and 10 look-ahead
Threshold Total benchmark retrievals Retrievals lost
99%
98% 15 0
96% 142 8
93% 446 163

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).