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CCE
2011
12 years 8 months ago
Time representations and mathematical models for process scheduling problems
During the last 15 years, many mathematical models have been developed in order to solve process operation scheduling problems, using discrete or continuous time representations. ...
Sylvain Mouret, Ignacio E. Grossmann, Pierre Pesti...
ECAI
2010
Springer
13 years 5 months ago
Symmetries of Symmetry Breaking Constraints
Symmetry is an important feature of many constraint programs. We show that any symmetry acting on a set of symmetry breaking constraints can be used to break symmetry. Different s...
George Katsirelos, Toby Walsh
IJCAI
2003
13 years 5 months ago
Tractable Symmetry Breaking for CSPs with Interchangeable Values
Symmetry breaking in CSPs has attracted consid­ erable attention in recent years. Various general schemes have been proposed to eliminate sym­ metries during search. In general,...
Pascal Van Hentenryck, Pierre Flener, Justin Pears...
ECAI
2008
Springer
13 years 6 months ago
Solving Necklace Constraint Problems
Abstract. Some constraint problems have a combinatorial structure where the constraints allow the sequence of variables to be rotated (necklaces), if not also the domain values to ...
Pierre Flener, Justin Pearson
CP
2008
Springer
13 years 6 months ago
Model Restarts for Structural Symmetry Breaking
ctural abstractions that were introduced in [17]. Compared with other symmetry-breaking techniques, the big advantage of dynamic symmetry breaking is that it can accommodate dynami...
Daniel S. Heller, Aurojit Panda, Meinolf Sellmann,...
GECCO
2006
Springer
135views Optimization» more  GECCO 2006»
13 years 8 months ago
Characterizing the dynamics of symmetry breaking in genetic programming
This paper introduces a metric that measures symmetry in tree graphs, which allows for a statistical characterization of GP solutions by their architectural "shapes." A ...
Jason M. Daida
CP
2006
Springer
13 years 8 months ago
Dynamic Symmetry Breaking Restarted
ion of a given partial assignment of values to variables. Compared with other symmetry breaking techniques, the big advantage of dynamic symmetry breaking is that it can accommodat...
Daniel S. Heller, Meinolf Sellmann
CP
2006
Springer
13 years 8 months ago
Static and Dynamic Structural Symmetry Breaking
We reconsider the idea of structural symmetry breaking (SSB) for constraint satisfaction problems (CSPs). We show that the dynamic dominance checks used in symmetry breaking by dom...
Pierre Flener, Justin Pearson, Meinolf Sellmann, P...
PODC
2010
ACM
13 years 8 months ago
A new technique for distributed symmetry breaking
We introduce Multi-Trials, a new technique for symmetry breaking for distributed algorithms and apply it to various problems in general graphs. For instance, we present three rand...
Johannes Schneider, Roger Wattenhofer
AMAI
2004
Springer
13 years 9 months ago
Symmetry Breaking in Constraint Satisfaction with Graph-Isomorphism: Comma-Free Codes
In this paper the use of graph isomorphism is investigated within the framework of symmetry breaking in constraint satisfaction problems. A running example of Comma-free codes is ...
Justin Pearson