Keyphrases
- metadata
- scientific publications
- probability density function
- open access
- digital libraries
- bibliographic data
- journal articles
- databases
- dublin core
- bibliographic information
- learning objects
- probability distribution function
- learning resources
- multimedia
- metadata management
- data warehouse
- bibliographic databases
- semantic search
- heterogeneous data
- metadata elements
- density function
- structured data
- digital objects
- newspaper articles
- digital documents
- digital content
- probability distribution functions
- news articles
- google scholar
- scientific articles
- earth science
- search tools
- probability distribution
- information retrieval