Keyphrases
- user experience
- virtual environment
- information systems
- laser pointer
- information retrieval
- end users
- user interaction
- virtual world
- human users
- user preferences
- virtual reality
- augmented reality
- virtual space
- user input
- user requirements
- global view
- user profiles
- learning technologies
- data sets
- collaborative filtering
- relevance feedback
- keywords
- real world
- databases