Keyphrases
- nearest neighbor
- query processing
- database
- online learning
- user queries
- database queries
- response time
- range searching
- k nearest neighbor
- query expansion
- query point
- range queries
- data sources
- data points
- data structure
- query evaluation
- query formulation
- real time
- index structure
- knn
- retrieval systems
- high dimensional data
- relevance feedback
- data model
- query rewriting
- databases
- approximate nearest neighbor
- data sets
- reverse nearest neighbor