Computing exact minimum cuts without knowing the graph

11/08/2017

∙

by   Aviad Rubinstein, et al.

∙

0

∙

share

We give query-efficient algorithms for the global min-cut and the s-t cut problem in unweighted, undirected graphs. Our oracle model is inspired by the submodular function minimization problem: on query S ⊂ V, the oracle returns the size of the cut between S and V ∖ S. We provide algorithms computing an exact minimum s-t cut in G with Õ(n^5/3) queries, and computing an exact global minimum cut of G with only Õ(n) queries (while learning the graph requires Θ̃(n^2) queries).