Keyphrases
- multi user
- virtual environment
- virtual world
- user interface
- multi granularity
- database
- single user
- query evaluation
- response time
- user queries
- multiple users
- multi touch
- query processing
- query expansion
- user interaction
- data structure
- retrieval systems
- query terms
- multiple access
- quantum computation
- collaborative writing
- database queries
- relevance feedback
- image processing
- virtual space
- query formulation