Keyphrases
- semantic annotation
- manual annotation
- computer mediated
- metadata
- natural language
- discourse analysis
- higher order
- automatic image annotation
- virtual learning community
- annotation tool
- multiple perspectives
- automatic annotation
- data sets
- image annotation
- active learning
- speech acts
- video annotation
- fully automatic
- semantic indexing
- discourse structure
- image retrieval
- multimedia
- weakly labeled