Paper by Erik D. Demaine

Piotr Berman, Erik D. Demaine, and Morteza Zadimoghaddam, “O(1)-Approximations for Maximum Movement Problems”, in Proceedings of the 14th International Workshop on Approximation Algorithms for Combinatorial Optimization Problems (APPROX 2011), Princeton, New Jersey, August 17–19, 2011, pages 62–74.

We develop constant-factor approximation algorithms for minimizing the maximum movement made by pebbles on a graph to reach a configuration in which the pebbles form a connected subgraph (connectivity), or interconnect a constant number of stationary nodes (Steiner tree). These problems model the minimization of the total time required to reconfigure a robot swarm to achieve a proximity (e.g., radio) network with these connectivity properties. Our approximation factors are tight up to constant factors, as none of these problems admit a (2 − ε)-approximation assuming P ≠ NP.

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The paper is 12 pages.

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Last updated September 3, 2017 by Erik Demaine.