Keyphrases
- spatial queries
- indexing techniques
- spatial index
- index structure
- spatial data
- r tree
- spatial databases
- range queries
- efficient processing
- spatial objects
- k nearest neighbor
- query processing
- geographic information systems
- road network
- b tree
- database
- knn
- multi dimensional
- metric space
- spatial relations
- closely related
- database management systems
- inverted index
- query result
- data structure
- feature selection