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» Dualities for Constraint Satisfaction Problems
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FOCS
1998
IEEE
13 years 12 months ago
The Complexity of Acyclic Conjunctive Queries
This paper deals with the evaluation of acyclic Boolean conjunctive queries in relational databases. By well-known results of Yannakakis [1981], this problem is solvable in polynom...
Georg Gottlob, Nicola Leone, Francesco Scarcello
ATAL
2006
Springer
13 years 11 months ago
Examining DCSP coordination tradeoffs
Distributed Constraint Satisfaction Problems (DCSPs) provide a model to capture a broad range of cooperative multiagent problem solving settings. Researchers have generally propos...
Michael Benisch, Norman M. Sadeh
INFOCOM
2006
IEEE
14 years 1 months ago
Capacity-Constrained Design of Resilient Multi-Tier Wireless Mesh Networks
nts etc.), an abstract graph of the deployment area and QoS constraints to generate appropriate logical topologies. WIND starts with the set of network elements to be deployed (Nod...
R. Raghuraman, Sridhar Iyer
DATE
2004
IEEE
175views Hardware» more  DATE 2004»
13 years 11 months ago
Breaking Instance-Independent Symmetries in Exact Graph Coloring
Code optimization and high level synthesis can be posed as constraint satisfaction and optimization problems, such as graph coloring used in register allocation. Graph coloring is...
Arathi Ramani, Fadi A. Aloul, Igor L. Markov, Kare...
PODS
2007
ACM
159views Database» more  PODS 2007»
14 years 7 months ago
Generalized hypertree decompositions: np-hardness and tractable variants
The generalized hypertree width GHW(H) of a hypergraph H is a measure of its cyclicity. Classes of conjunctive queries or constraint satisfaction problems whose associated hypergr...
Georg Gottlob, Thomas Schwentick, Zoltán Mi...