Tree clustering for constraint networks (research note)
Artificial Intelligence
Decomposing constraint satisfaction problems using database techniques
Artificial Intelligence
Multilevel k-way partitioning scheme for irregular graphs
Journal of Parallel and Distributed Computing
Multilevel hypergraph partitioning: applications in VLSI domain
IEEE Transactions on Very Large Scale Integration (VLSI) Systems
Multilevel k-way hypergraph partitioning
Proceedings of the 36th annual ACM/IEEE Design Automation Conference
Conjunctive query containment revisited
Theoretical Computer Science - Special issue on the 6th International Conference on Database Theory—ICDT '97
A comparison of structural CSP decomposition methods
Artificial Intelligence
The complexity of acyclic conjunctive queries
Journal of the ACM (JACM)
Tabu Search
Computers and Intractability: A Guide to the Theory of NP-Completeness
Computers and Intractability: A Guide to the Theory of NP-Completeness
A linear-time heuristic for improving network partitions
DAC '82 Proceedings of the 19th Design Automation Conference
Constraint Processing
Generalized hypertree decompositions: np-hardness and tractable variants
Proceedings of the twenty-sixth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
Algorithms for acyclic database schemes
VLDB '81 Proceedings of the seventh international conference on Very Large Data Bases - Volume 7
A backtracking-based algorithm for hypertree decomposition
Journal of Experimental Algorithmics (JEA)
Hypertree-decomposition via branch-decomposition
IJCAI'05 Proceedings of the 19th international joint conference on Artificial intelligence
SOFSEM'05 Proceedings of the 31st international conference on Theory and Practice of Computer Science
A greedy algorithm for constructing a low-width generalized hypertree decomposition
Proceedings of the 13th International Conference on Database Theory
A dynamic-programming based ASP-solver
JELIA'10 Proceedings of the 12th European conference on Logics in artificial intelligence
Distributed tree decomposition with privacy
CP'12 Proceedings of the 18th international conference on Principles and Practice of Constraint Programming
Evaluating tree-decomposition based algorithms for answer set programming
LION'12 Proceedings of the 6th international conference on Learning and Intelligent Optimization
D-flat: Declarative problem solving using tree decompositions and answer-set programming
Theory and Practice of Logic Programming
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The literature provides several structural decomposition methods for identifying tractable subclasses of the constraint satisfaction problem. Generalized hypertree decompositionis the most general of such decomposition methods. Although the relationship to other structural decomposition methods has been thoroughly investigated, only little research has been done on efficient algorithms for computing generalized hypertree decompositions. In this paper we propose new heuristic algorithms for the construction of generalized hypertree decompositions. We evaluate and compare our approaches experimentally on both industrial and academic benchmark instances. Our experiments show that our algorithms improve previous heuristic approaches for this problem significantly.