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PODS
2005
ACM
104views Database» more  PODS 2005»
16 years 4 months ago
Determining source contribution in integration systems
Owners of sources registered in an information integration system, which provides answers to a (potentially evolving) set of client queries, need to know their contribution to the...
Alin Deutsch, Yannis Katsis, Yannis Papakonstantin...
TACAS
2009
Springer
115views Algorithms» more  TACAS 2009»
15 years 11 months ago
Iterating Octagons
Abstract. In this paper we prove that the transitive closure of a nondeterministic octagonal relation using integer counters can be expressed in Presburger arithmetic. The direct c...
Marius Bozga, Codruta Gîrlea, Radu Iosif
SEFM
2009
IEEE
15 years 11 months ago
Right Propositional Neighborhood Logic over Natural Numbers with Integer Constraints for Interval Lengths
Interval temporal logics are based on interval structures over linearly (or partially) ordered domains, where time intervals, rather than time instants, are the primitive ontologi...
Davide Bresolin, Valentin Goranko, Angelo Montanar...
CIKM
2009
Springer
15 years 11 months ago
LoOP: local outlier probabilities
Many outlier detection methods do not merely provide the decision for a single data object being or not being an outlier but give also an outlier score or “outlier factor” sig...
Hans-Peter Kriegel, Peer Kröger, Erich Schube...
FGIT
2009
Springer
15 years 11 months ago
Predicting the Performance of a GRID Environment: An Initial Effort to Increase Scheduling Efficiency
GRID environments are privileged targets for computation-intensive problem solving in areas from weather forecasting to seismic analysis. Mainly composed by commodity hardware, th...
Nuno Guerreiro, Orlando Belo