Abstract
We disprove a conjecture of Shor and Smith on a greedy heuristic for the Steiner minimum tree by showing that the length ratio between the Steiner minimum tree and the greedy tree constructed by their method for the same set of points can be arbitrarily close to√3/2. We also propose a new conjecture.
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References
P. Berman and V. Ramaiye, An approximation algorithm for the Steiner tree problem,Journal of Algorithms,17 (1994), 381–408.
F. R. K. Chung and R. L. Graham, A new bound for Euclidean Steiner minimum trees,Annals of the New York Academy of Sciences,440 (1985), 328–346.
F. R. K. Chung and F. K. Hwang, A lower bound for the Steiner tree problem,SIAM Journal of Applied Mathematics,34 (1978), 27–36.
T. Cole, A problem in Steiner networks, Manuscript.
D. Z. Du and F. K. Hwang, A new bound for the Steiner ratio,Transactions of the American Mathematical Society,278 (1983), 137–148.
D. Z. Du and F. K. Hwang, A proof of the Gilbert-Pollak conjecture on the Steiner ratio,Algorithmica,7 (1992), 121–135.
D. Z. Du, Y. Zhang, and Q. Feng, On better heuristic for Euclidean Steiner minimum trees,Proceedings of the and Symposium on the Foundations of Computer Science, 1991.
M. R. Garey, R. L. Graham, and D. S. Johnson, The complexity of computing Steiner minimal trees,SIAM Journal of Applied Mathematics,32 (1977), 835–859.
E. N. Gilbert and H. O. Pollak, Steiner minimal trees,SIAM Journal of Applied Mathematics,16 (1968), 1–29.
R. L. Graham and F. K. Hwang, Remarks on Steiner minimal trees,Bulletin of the Institute of Mathematics, Academia Sinica,4 (1976), 177–182.
H. O. Pollak, Some remarks on the Steiner problem,Journal of Combinatorial Theory, Series A,24 (1978), 278–295.
J. H. Rubinstein and D. A. Thomas, The Steiner ratio conjecture for six points,Journal of Combinatorial Theory, Series A,58 (1991), 54–77.
J. H. Rubinstein and D. A. Thomas, The calculus of variations and the Steiner problem,Annals of Operations Research,33 (1991), 481–499.
W. D. Smith and P. W. Shor, Steiner tree problems,Algorithmica,7 (1992), 329–332.
Hong Yi, Yang Hongcang, and Du Dingzhu, An inequality for convex functions,Kexue Tongbao 27 (1982), 901–904.
A. Z. Zelikovsky, The 11/6-approximation algorithm for the Steiner problem on networks,Algorithmica,9 (1993), 463–470.
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Communicated by C. K. Wong.
Supported in part by the National Science Foundation under Grant CCR-9208913.
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Du, D.Z. On greedy heuristics for steiner minimum trees. Algorithmica 13, 381–386 (1995). https://doi.org/10.1007/BF01293486
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DOI: https://doi.org/10.1007/BF01293486