Approximate Continuous Top-k Query over Sliding Window.
Rui ZhuBin WangShiying LuoXiaochun YangGuoren WangPublished in: J. Comput. Sci. Technol. (2017)
Keyphrases
- sliding window
- skyline queries
- query processing
- data streams
- window size
- approximate answers
- fixed size
- query result
- exact answers
- result set
- database
- response time
- user defined
- streaming data
- range queries
- stream data
- exact and approximate
- space efficient
- aggregate queries
- user queries
- scoring functions
- query evaluation
- variable size
- database queries
- continuous queries
- efficient processing
- query optimization
- query execution
- cost model
- metric space
- data objects
- sensor data
- index structure
- similarity measure
- database systems