Keyphrases
- tree structure
- topological and directional
- spatial relationships
- metadata
- data structure
- spatial information
- image content
- spatial data
- digital libraries
- temporal relationships
- pattern matching
- spatial relations
- databases
- database
- learning objects
- r tree
- pairwise
- geographic information systems
- spatial objects
- suffix tree
- spatio temporal
- visual words
- spatial databases
- heterogeneous data
- dublin core