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Improved Strategies for Branching on General Disjunctions

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journal contribution
posted on 16.03.2009, 00:00 by Gerard CornuejolsGerard Cornuejols, Leo Liberti, Giacomo Nannicini
Within the context of solving Mixed-Integer Linear Programs by a Branch-and- Cut algorithm, we propose a new strategy for branching. Computational experiments show that, on the majority of our test instances, this approach enumerates fewer nodes than traditional branching. On average, the number of nodes in the enumeration tree is reduced by a factor two, while computing time is comparable. On a few instances, the improvements are of several orders of magnitude in both number of nodes and computing time


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