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A New Algorithm for Multi-objective Graph Partitioning⋆
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A New Algorithm for Multi-objective Graph Partitioning⋆
Kirk Schloegel6 , George Karypis6 and Vipin Kumar7 
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Department of Computer Science and Engineering, University of Minnesota, Minnesota |
| (7) |
Army HPC Research Center, Minneapolis, Minnesota |
Abstract
Recently, a number of graph partitioning applications have emerged with additional requirements that the traditional graph
partitioning model alone cannot effectively handle. One such class of problems is those in which multiple objectives, each
of which can be modeled as a sum of weights of the edges of a graph, must be simultaneously optimized. This class of problems
can be solved utilizing a multi-objective graph partitioning algorithm. We present a new formulation of the multi-objective
graph partitioning problem and describe an algorithm that computes partitionings with respect to this formulation. We explain
how this algorithm provides the user with a fine-tuned control of the tradeoffs among the objectives, results in predictable
partitionings, and is able to handle both similar and dissimilar objectives. We show that this algorithm is better able to
find a good tradeoff among the objectives than partitioning with respect to a single objective only. Finally, we show that
by modifying the input preference vector, the multi-objective graph partitioning algorithm is able to gracefully tradeoff
decreases in one objective for increases in the others.
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