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SIGMOD
2009
ACM
190views Database» more  SIGMOD 2009»
16 years 6 months ago
Optimizing complex extraction programs over evolving text data
Most information extraction (IE) approaches have considered only static text corpora, over which we apply IE only once. Many real-world text corpora however are dynamic. They evol...
Fei Chen 0002, Byron J. Gao, AnHai Doan, Jun Yang ...
SIGMOD
2008
ACM
120views Database» more  SIGMOD 2008»
16 years 6 months ago
Muse: a system for understanding and designing mappings
Schema mappings are logical assertions that specify the relationships between a source and a target schema in a declarative way. The specification of such mappings is a fundamenta...
Bogdan Alexe, Laura Chiticariu, Renée J. Mi...
SIGMOD
2006
ACM
131views Database» more  SIGMOD 2006»
16 years 6 months ago
An automatic construction and organization strategy for ensemble learning on data streams
As data streams are gaining prominence in a growing number of emerging application domains, classification on data streams is becoming an active research area. Currently, the typi...
Yi Zhang, Xiaoming Jin
SIGMOD
2006
ACM
116views Database» more  SIGMOD 2006»
16 years 6 months ago
Fast range-summable random variables for efficient aggregate estimation
Exact computation for aggregate queries usually requires large amounts of memory ? constrained in data-streaming ? or communication ? constrained in distributed computation ? and ...
Florin Rusu, Alin Dobra
SIGMOD
2005
ACM
133views Database» more  SIGMOD 2005»
16 years 6 months ago
Semantics and Evaluation Techniques for Window Aggregates in Data Streams
A windowed query operator breaks a data stream into possibly overlapping subsets of data and computes results over each. Many stream systems can evaluate window aggregate queries....
Jin Li, David Maier, Kristin Tufte, Vassilis Papad...