Paper by Erik D. Demaine

Takehiro Ito, Erik D. Demaine, Nicholas J. A. Harvey, Christos H. Papadimitriou, Martha Sideri, Ryuhei Uehara, and Yushi Uno, “On the Complexity of Reconfiguration Problems”, in Proceedings of the 19th Annual International Symposium on Algorithms and Computation (ISAAC 2008), Gold Coast, Australia, December 15–17, 2008, pages 28–39.

Reconfiguration problems arise when we wish to find a step-by-step transformation between two feasible solutions of a problem such that all intermediate results are also feasible. We demonstrate that a host of reconfiguration problems derived from NP-complete problems are PSPACE-complete, while some are also NP-hard to approximate. In contrast, several reconfiguration versions of problems in P are solvable in polynomial time.

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The paper is 12 pages.

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Related papers:
NPReconfiguration_TCS (On the Complexity of Reconfiguration Problems)
NPReconfiguration_WADS2009 (Reconfiguration of List Edge-Colorings in a Graph)
SubsetSumReconfiguration_JOCO (Approximability of the Subset Sum Reconfiguration Problem)

See also other papers by Erik Demaine.
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Last updated July 25, 2017 by Erik Demaine.