Keyphrases
- location based services
- spatial queries
- spatial data
- road network
- spatial databases
- location information
- spatial objects
- wifi
- nearest neighbor queries
- geographic information systems
- r tree
- mobile environments
- mobile objects
- k nearest neighbor
- efficient processing
- shortest path
- range queries
- spatial datasets
- spatial relationships
- mobile users
- data sets
- multi dimensional
- mobile devices
- moving objects
- data analysis