Abstract
We present semidefinite relaxations of nonconvex, box-constrained quadratic programming, which incorporate the first- and second-order necessary optimality conditions, and establish theoretical relationships between the new relaxations and a basic semidefinite relaxation due to Shor. We compare these relaxations in the context of branch-and-bound to determine a global optimal solution, where it is shown empirically that the new relaxations are significantly stronger than Shor’s. An effective branching strategy is also developed.
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Both authors supported in part by NSF Grant CCF-0545514.
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Burer, S., Chen, J. Relaxing the optimality conditions of box QP. Comput Optim Appl 48, 653–673 (2011). https://doi.org/10.1007/s10589-009-9273-2
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DOI: https://doi.org/10.1007/s10589-009-9273-2