An algorithm for finding hamilton cycles in random directed graphs |
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Institution: | 1. Department of Computer Science and Engineering, Pohang University of Science and Technology, Pohang, Republic of Korea;2. Graduate School of Artificial Intelligence, Department of Computer Science and Engineering, Pohang University of Science and Technology, Pohang, Republic of Korea |
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Abstract: | We describe a polynomial (O(n1.5)) time algorithm DHAM for finding hamilton cycles in digraphs. For digraphs chosen uniformly at random from the set of digraphs with vertex set {1, 2, …, n} and m = m(n) edges the limiting probability (as n → ∞) that DHAM finds a hamilton cycle equals the limiting probability that the digraph is hamiltonian. Some applications to random “travelling salesman problems” are discussed. |
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