Approximate Range-Sum Queries over Data Cubes Using Cosine Transform.
Wen-Chi HouCheng LuoZhewei JiangFeng YanQiang ZhuPublished in: DEXA (2008)
Keyphrases
- range sum queries
- data cube
- cosine transform
- space efficient
- multi dimensional
- aggregate queries
- compression algorithm
- approximate query answering
- olap data cubes
- image encryption
- dynamic range
- on line analytical processing
- data warehouse
- range queries
- data structure
- efficient computation
- compression ratio
- image quality
- high dimensional