Evaluating Path Queries Over Frequently Updated Route Collection

Provided by: International Journal of Computer Science and Mobile Computing (IJCSMC)
Topic: Mobility
Format: PDF
The recent advances in the infrastructure of Geographic Information Systems (GIS), and the proliferation of GPS technology, have resulted in the abundance of geo-data in the form of sequences of Points Of Interest (POIs), waypoints etc. Two sets of such sequences as route collections. The path queries on frequently updated route collections: given a route collection and two point's ns and nt, a path query returns a path, i.e., a sequence of points that connects ns to nt. The introduce two path query evaluation paradigms that enjoy the benefits of search algorithms (i.e., fast index maintenance) while utilizing transitivity information to terminate the search sooner.

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