We consider the minimum cut problem in undirected, weighted graphs. We give a simple algorithm to find a minimum cut that 2-respects (cuts two edges of) a spanning tree T of a graph G. This procedure can be used in place of the complicated subroutine given in Karger’s near-linear time minimum cut algorithm [Karger, 2000]. We give a self-contained version of Karger’s algorithm with the new procedure, which is easy to state and relatively simple to implement. It produces a minimum cut on an m-edge, n-vertex graph in O(m log³ n) time with high probability, matching the complexity of Karger’s approach.
@InProceedings{bhardwaj_et_al:LIPIcs.SWAT.2020.12, author = {Bhardwaj, Nalin and Molina Lovett, Antonio J. and Sandlund, Bryce}, title = {{A Simple Algorithm for Minimum Cuts in Near-Linear Time}}, booktitle = {17th Scandinavian Symposium and Workshops on Algorithm Theory (SWAT 2020)}, pages = {12:1--12:18}, series = {Leibniz International Proceedings in Informatics (LIPIcs)}, ISBN = {978-3-95977-150-4}, ISSN = {1868-8969}, year = {2020}, volume = {162}, editor = {Albers, Susanne}, publisher = {Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik}, address = {Dagstuhl, Germany}, URL = {https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.SWAT.2020.12}, URN = {urn:nbn:de:0030-drops-122594}, doi = {10.4230/LIPIcs.SWAT.2020.12}, annote = {Keywords: minimum cut, sparsification, near-linear time, packing} }
Feedback for Dagstuhl Publishing