On compact and efficient routing in certain graph classes

  • Authors:
  • Feodor F. Dragan;Irina Lomonosov

  • Affiliations:
  • Department of Computer Science, Kent State University, Kent, Ohio;Department of Computer Science, Hiram College, Hiram, Ohio

  • Venue:
  • ISAAC'04 Proceedings of the 15th international conference on Algorithms and Computation
  • Year:
  • 2004

Quantified Score

Hi-index 0.00

Visualization

Abstract

In this paper we refine the notion of tree-decomposition by introducing acyclic (R,D)-clustering, where clusters are subsets of vertices of a graph and R and D are the maximum radius and the maximum diameter of these subsets We design a routing scheme for graphs admitting induced acyclic (R,D)-clustering where the induced radius and the induced diameter of each cluster are at most 2 We show that, by constructing a family of special spanning trees, one can achieve a routing scheme of deviation Δ ≤ 2R with labels of size O(log3n / loglog n) bits per vertex and O(1) routing protocol for these graphs We investigate also some special graph classes admitting induced acyclic (R,D)-clustering with induced radius and diameter less than or equal to 2, namely, chordal bipartite, homogeneously orderable, and interval graphs We achieve the deviation Δ = 1 for interval graphs and Δ = 2 for chordal bipartite and homogeneously orderable graphs.