Keyphrases
- metadata
- digital libraries
- dublin core
- learning objects
- multimedia
- search tools
- semantic information
- digital documents
- resource discovery
- semantic search
- metadata management
- information resources
- learning resources
- metadata standards
- metadata extraction
- metadata schema
- digital content
- metadata creation
- real time
- earth science
- heterogeneous data
- web search
- knowledge base
- neural network
- data sets