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» A Logic-Based Information System
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PODS
2005
ACM
151views Database» more  PODS 2005»
16 years 7 months ago
Estimating arbitrary subset sums with few probes
Suppose we have a large table T of items i, each with a weight wi, e.g., people and their salary. In a general preprocessing step for estimating arbitrary subset sums, we assign e...
Noga Alon, Nick G. Duffield, Carsten Lund, Mikkel ...
PODS
2005
ACM
136views Database» more  PODS 2005»
16 years 7 months ago
Context-sensitive program analysis as database queries
Program analysis has been increasingly used in software engineering tasks such as auditing programs for security vulnerabilities and finding errors in general. Such tools often re...
Monica S. Lam, John Whaley, V. Benjamin Livshits, ...
EDBT
2006
ACM
105views Database» more  EDBT 2006»
16 years 7 months ago
HASE: A Hybrid Approach to Selectivity Estimation for Conjunctive Predicates
Current methods for selectivity estimation fall into two broad categories, synopsis-based and sampling-based. Synopsis-based methods, such as histograms, incur minimal overhead at ...
Xiaohui Yu, Nick Koudas, Calisto Zuzarte
EDBT
2008
ACM
137views Database» more  EDBT 2008»
16 years 7 months ago
Synthesizing structured text from logical database subsets
In the classical database world, information access has been based on a paradigm that involves structured, schema-aware, queries and tabular answers. In the current environment, h...
Alkis Simitsis, Georgia Koutrika, Yannis Alexandra...
ICSE
2007
IEEE-ACM
16 years 6 months ago
Analysis of a Redundant Architecture for Critical Infrastructure Protection
Critical infrastructures like the power grid are emerging as collection of existing separated systems of different nature which are interconnected together. Their criticality becom...
Alessandro Daidone, Andrea Bondavalli, Paulo Ver&i...
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