Keyphrases
- knowledge sharing
- retrieval model
- image database
- collaborative learning
- test collection
- social networks
- group dynamics
- social interaction
- information retrieval
- information retrieval systems
- text retrieval
- document retrieval
- knowledge creation
- multi user
- online collaborative
- collaborative learning environments
- query expansion
- retrieval accuracy
- social learning
- social aspects
- message exchange
- sharing information
- cscl environments
- sensemaking
- structured documents
- retrieval process
- computer supported collaborative learning
- computer mediated
- content based retrieval
- relevance feedback
- multimedia
- e learning