Keyphrases
- spatial information
- information retrieval
- spatial data
- spatial and temporal
- spatial reasoning
- spatio temporal
- document collections
- document images
- structured documents
- keywords
- digital libraries
- information retrieval systems
- web documents
- retrieval systems
- database
- document analysis
- text documents
- multimedia
- e learning
- feature selection
- document processing
- educational hypermedia
- spatial distribution
- document representation
- document classification
- spatial relationships
- spatial databases
- document clustering
- neural network