A First Look at Caching during TIP-Tree Navigation for Location Based Services

This paper explores the issue of caching during TIP-tree navigation for location-based services. The TIP-tree is a recently proposed spatial access method for supporting continuous point queries in a tourist information system. In addition, its navigation strategy avoids repeating searching, thus providing efficient processing of user trajectories that are not known in advance. This paper proposes a caching strategy that further improves upon the efficiency of the TIP-tree navigation algorithm. A performance evaluation shows that significant improvement is possible when navigation and caching are applied together.