Problem di-yuan--U-U-E-N-C-A-N-N


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Nodes 11
Links 42
Demands 22
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Originator -
Contributor Di Yuan, ITN, Linkoeping University
Submission date 17.10.2005
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Solutions provided to SNDlib:

objective contributor submission date additional information
686600.00 Sebastian Orlowski 20.12.2005 taken from U-U-E-N-I-A-N-N
678600.00 Sebastian Orlowski 17.08.2006 path-flow LP with column generation, B&C with metric inequalities, time limit 1h
656600.00 Christian Raack 06.11.2006 edge-flow formulation, CPLEX 10.0 plus flow-cutset inequalities, 1:15 minutes to optimality
656600.00 Christian Raack 06.11.2006 edge-flow formulation, CPLEX 10.0, 7:40 minutes to optimality

statistics about all solutions

Dual bounds provided to SNDlib:

dual bound contributor submission date additional information
656600.00 Christian Raack 06.11.2006 edge-flow formulation, CPLEX 10.0 plus flow-cutset inequalities, 1:15 minutes to optimality
529883.49 Sebastian Orlowski 17.08.2006 path-flow LP with column generation, B&C with metric inequalities, time limit 1h

Note: we encourage you to submit dual bounds to a problem if you have them. However, in contrast to primal solutions, we cannot check dual bounds for validity, which is why dual bounds are only listed here together with their contributor.



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