Sciweavers

792 search results - page 56 / 159
» Computing Iceberg Queries Efficiently
Sort
View
PVLDB
2008
101views more  PVLDB 2008»
14 years 9 months ago
Output perturbation with query relaxation
Given a dataset containing sensitive personal information, a statistical database answers aggregate queries in a manner that preserves individual privacy. We consider the problem ...
Xiaokui Xiao, Yufei Tao
DCC
2007
IEEE
15 years 9 months ago
Nonuniform Compression in Databases with Haar Wavelet
Data synopsis is a lossy compressed representation of data stored into databases that helps the query optimizer to speed up the query process, e.g. time to retrieve the data from ...
S. Chen, A. Nucci
EUROPAR
2008
Springer
14 years 11 months ago
Scheduling Intersection Queries in Term Partitioned Inverted Files
Abstract. This paper proposes and presents a comparison of scheduling algorithms applied to the context of load balancing the query traffic on distributed inverted files. We put em...
Mauricio Marín, Carlos Gomez-Pantoja, Senen...
GRID
2007
Springer
15 years 1 months ago
Optimizing multiple queries on scientific datasets with partial replicas
We propose strategies to efficiently execute a query workload, which consists of multiple related queries submitted against a scientific dataset, on a distributed-memory system in...
Li Weng, Ümit V. Çatalyürek, Tahs...
WWW
2008
ACM
15 years 10 months ago
Using graphics processors for high-performance IR query processing
Web search engines are facing formidable performance challenges due to data sizes and query loads. The major engines have to process tens of thousands of queries per second over t...
Shuai Ding, Jinru He, Hao Yan, Torsten Suel