Keyphrases
- semantic information
- pdf files
- document collections
- document archives
- information retrieval
- document content
- semantic technologies
- semantic structure
- information retrieval systems
- document images
- heterogeneous data sources
- software tools
- high level
- semantic integration
- semantic network
- special issue
- keywords
- document retrieval
- text documents
- natural language
- semantic web
- data integration
- semantic similarity
- document classification
- semantic relationships
- semantic search
- document clustering
- semantic space
- semantic representation
- unstructured documents
- web documents
- domain ontology
- relevant documents
- semantic content
- document representation
- semantic annotation