Eigenvalues and graph bisection: An average-case analysis

  • Authors:
  • Ravi B. Boppana

  • Affiliations:
  • -

  • Venue:
  • SFCS '87 Proceedings of the 28th Annual Symposium on Foundations of Computer Science
  • Year:
  • 1987

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Abstract

Graph Bisection is the problem of partitioning the vertices of a graph into two equal-size pieces so as to minimize the number of edges between the two pieces. This paper presents an algorithm that will, for almost all graphs in a certain class, output the minimum-size bisection. Furthermore the algorithm will yield, for almost all such graphs, a proof that the bisection is optimal. The algorithm is based on computing eigenvalues and eigenvectors of matrices associated with the graph.