Keyphrases
- metadata
- digital preservation
- digital objects
- digital libraries
- long term preservation
- learning objects
- metadata standards
- dublin core
- multimedia
- learning resources
- long term
- open access
- database
- e learning
- scientific publications
- resource discovery
- search tools
- statistical information
- data sets
- information retrieval
- cultural heritage
- multimedia content
- environmental data
- semantic metadata
- learning systems
- metadata extraction
- oai pmh
- learning algorithm