Keyphrases
- metadata
- digital libraries
- special issue
- journal articles
- effective retrieval
- special section
- multimedia
- google scholar
- scientific literature
- metadata management
- learning objects
- metadata extraction
- learning resources
- dublin core
- efficient retrieval
- metadata standards
- international journal
- databases
- database
- semantic web technologies
- digital documents
- metadata elements
- information retrieval
- scientific publications
- social networks
- semantic information
- invited talk
- semantic search
- review process
- multimedia content
- information resources
- data warehouse
- earth science
- statistical information
- practical experiences
- educational resources
- textual descriptions