Keyphrases
- semantic web
- social media
- knowledge representation
- knowledge base
- rdf knowledge bases
- image collections
- user generated content
- semantic web technologies
- ontology languages
- image retrieval
- tag ranking
- owl ontologies
- tag recommendation
- photo collections
- geo referenced
- photo sharing
- data sets
- data model
- tagged images
- geo tagged
- open world
- web ontology language
- geographic location
- rule language
- content sharing
- owl dl
- web services
- visual features
- description logics