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» A Logic of Graph Constraints
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KR
2010
Springer
15 years 5 months ago
Walking the Decidability Line for Rules with Existential Variables
We consider positive rules in which the conclusion may contain existentially quantified variables, which makes reasoning tasks (such as Deduction) undecidable. These rules have t...
Jean-François Baget, Michel LeClere, Marie-...
116
Voted
ESCIENCE
2007
IEEE
15 years 4 months ago
A Scalable and Efficient Prefix-Based Lookup Mechanism for Large-Scale Grids
Data sources, storage, computing resources and services are entities on Grids that require mechanisms for publication and lookup. A discovery service relies on efficient lookup to...
Philip Chan, David Abramson
FOAL
2009
ACM
15 years 4 months ago
Graph-based specification and simulation of featherweight Java with around advice
In this paper we specify an operational run-time semantics of Assignment Featherweight Java -- a minimal subset of Java with assignments -- with around advice, using graph transfo...
Tom Staijen, Arend Rensink
DMDW
2000
173views Management» more  DMDW 2000»
15 years 2 months ago
A quality-based framework for physical data warehouse design
Data warehousing is a software infrastructure which supports OLAP applications by providing a collection of tools which allow data extraction and cleaning, data integration and ag...
Mokrane Bouzeghoub, Zoubida Kedad
MST
2007
154views more  MST 2007»
15 years 15 days ago
Crown Structures for Vertex Cover Kernelization
Crown structures in a graph are defined and shown to be useful in kernelization algorithms for the classic vertex cover problem. Two vertex cover kernelization methods are discus...
Faisal N. Abu-Khzam, Michael R. Fellows, Michael A...