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CP
2004
Springer
13 years 11 months ago
Set Variables and Local Search
Many combinatorial (optimisation) problems have natural models based on, or including, set variables and set constraints. This was already known to the constraint programming commu...
Magnus Ågren
CP
2004
Springer
14 years 26 days ago
Disjoint, Partition and Intersection Constraints for Set and Multiset Variables
We have started a systematic study of global constraints on set and multiset variables. We consider here disjoint, partition, and intersection constraints in conjunction with cardi...
Christian Bessière, Emmanuel Hebrard, Brahi...
POPL
1999
ACM
13 years 11 months ago
Constraint Systems for Useless Variable Elimination
Superfluous variables are often produced as the byproducts of program transformations, compilation, and poorly written code. These variables are irrelevant to the computational o...
Mitchell Wand, Igor Siveroni
TGC
2007
Springer
14 years 1 months ago
Elimination of Ghost Variables in Program Logics
Abstract. Ghost variables are assignable variables that appear in program annotations but do not correspond to physical entities. They are used to facilitate specification and ver...
Martin Hofmann, Mariela Pavlova
LPAR
2001
Springer
13 years 12 months ago
Permutation Problems and Channelling Constraints
When writing a constraint program, we have to decide what to make the decision variable, and how to represent the constraints on these variables. In many cases, there is considerab...
Toby Walsh