Cut Selection For Benders Decomposition (1906.05583v2)

Abstract: In this paper, we present a new perspective on cut generation in the context of Benders decomposition. The approach, which is based on the relation between the alternative polyhedron and the reverse polar set, helps us to improve established cut selection procedures for Benders cuts, like the one suggested by Fischetti, Salvagnin, and Zanette [FSZ10]. Our modified version of that criterion produces cuts which are always supporting and, unless in rare special cases, facet-defining. We discuss our approach in relation to the state of the art in cut generation for Benders decomposition. In particular, we refer to Pareto-optimality and facet-defining cuts and observe that each of these criteria can be matched to a particular subset of parameterizations for our cut generation framework. As a consequence, our framework includes the method to generate facet-defining cuts proposed by Conforti and Wolsey [CW18] as a special case.