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library for polynomially constrained
mixed-integer programming


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Hard  data_clique_50.dimacs

Namedata_clique_50.dimacs
Classificationnc|bc|d2
Problem typegraphpart
DescriptionQuadratic model for graph partitioning instance data_clique_50.dimacs
Objective sensemin
Variables151  (150 binary, 0 general integer, 1 continuous)
Nonlinear variables1
Constraints50
Nonlinear constraints1
Linear nonzeros101
Nonlinear nonzeros3676
Download data_clique_50.dimacs.pip.gz data_clique_50.dimacs.gms.gz data_clique_50.dimacs.mod.gz data_clique_50.dimacs.zpl.gz
Best known solution
Best known objective2312
Best known bound2312
OriginatorBissan Ghaddar, Miguel Anjos, and Frauke Liers
FormulatorMarc Pfetsch
DonatorMarc Pfetsch
References GhaddarAnjosLiers09
Links
Additional informationThis is a quadratic model for the graph partitioning problem. The graphs are taken from the publication of Ghaddar et al. We used 3 parts of the partition to generate the quadratic instances. The model assigns each node to one of the three parts. Hence, the model is symmetric, which should probably be used in a solution algorithm.

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