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» MindReader: Querying Databases Through Multiple Examples
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PODS
2007
ACM
225views Database» more  PODS 2007»
14 years 11 months ago
Sketching unaggregated data streams for subpopulation-size queries
IP packet streams consist of multiple interleaving IP flows. Statistical summaries of these streams, collected for different measurement periods, are used for characterization of ...
Edith Cohen, Nick G. Duffield, Haim Kaplan, Carste...
ICDE
2004
IEEE
138views Database» more  ICDE 2004»
15 years 9 days ago
Making the Pyramid Technique Robust to Query Types and Workloads
The effectiveness of many existing high-dimensional indexing structures is limited to specific types of queries and workloads. For example, while the Pyramid technique and the iMi...
Rui Zhang 0003, Beng Chin Ooi, Kian-Lee Tan
SIGMOD
2002
ACM
236views Database» more  SIGMOD 2002»
14 years 11 months ago
The Cougar Approach to In-Network Query Processing in Sensor Networks
The widespread distribution and availability of smallscale sensors, actuators, and embedded processors is transforming the physical world into a computing platform. One such examp...
Yong Yao, Johannes Gehrke
ICDE
2005
IEEE
113views Database» more  ICDE 2005»
15 years 9 days ago
On the Optimal Ordering of Maps and Selections under Factorization
The query optimizer of a database system is confronted with two aspects when handling user-defined functions (UDFs) in query predicates: the vast differences in evaluation costs b...
Thomas Neumann, Sven Helmer, Guido Moerkotte
JACM
2000
81views more  JACM 2000»
13 years 10 months ago
Relational queries over interpreted structures
We rework parts of the classical relational theory when the underlying domain is a structure with some interpreted operations that can be used in queries. We identify parts of the...
Michael Benedikt, Leonid Libkin