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» Efficient Temporal Join Processing Using Indices
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EDBT
2004
ACM
162views Database» more  EDBT 2004»
14 years 7 months ago
Non-contiguous Sequence Pattern Queries
Abstract. Non-contiguous subsequence pattern queries search for symbol instances in a long sequence that satisfy some soft temporal constraints. In this paper, we propose a methodo...
Nikos Mamoulis, Man Lung Yiu
DEBS
2007
ACM
13 years 11 months ago
Temporal order optimizations of incremental joins for composite event detection
Queries for composite events typically involve the four complementary dimensions of event data, event composition, relationships between events (esp. temporal and causal), and acc...
François Bry, Michael Eckert
IIS
2004
13 years 8 months ago
Query Selectivity Estimation via Data Mining
Estimating the result size of a join is an important query optimization problem as it determines the choice of a good query evaluation strategy. Yet, there are few efficient techni...
Jarek Gryz, Dongming Liang
TKDE
2002
148views more  TKDE 2002»
13 years 7 months ago
Parallel Star Join + DataIndexes: Efficient Query Processing in Data Warehouses and OLAP
On-Line Analytical Processing (OLAP) refers to the technologies that allow users to efficiently retrieve data from the data warehouse for decision-support purposes. Data warehouses...
Anindya Datta, Debra E. VanderMeer, Krithi Ramamri...
ACIIDS
2009
IEEE
144views Database» more  ACIIDS 2009»
14 years 13 days ago
Processing Exact Results for Sliding Window Joins over Time-Sequence, Streaming Data Using a Disk Archive
— We consider the problem of processing exact results for sliding window joins over data streams with limited memory. Existing approaches deal with memory limitations by shedding...
Abhirup Chakraborty, Ajit Singh