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ICDCS
2007
IEEE
15 years 5 months ago
Two-Tier Multiple Query Optimization for Sensor Networks
When there are multiple queries posed to the resourceconstrained wireless sensor network, it is critical to process them efficiently. In this paper, we propose a Two-Tier Multipl...
Shili Xiang, Hock-Beng Lim, Kian-Lee Tan, Yongluan...
SSDBM
2005
IEEE
115views Database» more  SSDBM 2005»
15 years 4 months ago
Using Multi-Scale Histograms to Answer Pattern Existence and Shape Match Queries
Similarity-based querying of time series data can be categorized as pattern existence queries and shape match queries. Pattern existence queries find the time series data with ce...
Lei Chen 0002, M. Tamer Özsu, Vincent Oria
VLDB
2005
ACM
129views Database» more  VLDB 2005»
15 years 4 months ago
Sketching Streams Through the Net: Distributed Approximate Query Tracking
Emerging large-scale monitoring applications require continuous tracking of complex dataanalysis queries over collections of physicallydistributed streams. Effective solutions hav...
Graham Cormode, Minos N. Garofalakis
DOLAP
2003
ACM
15 years 4 months ago
Exploiting hierarchical clustering in evaluating multidimensional aggregation queries
Multidimensional aggregation queries constitute the single most important class of queries for data warehousing applications and decision support systems. The bottleneck in the ev...
Dimitri Theodoratos
SIGIR
2003
ACM
15 years 4 months ago
Re-examining the potential effectiveness of interactive query expansion
Much attention has been paid to the relative effectiveness of interactive query expansion versus automatic query expansion. Although interactive query expansion has the potential ...
Ian Ruthven