## Abstract The traveling salesman problem, path, or cycle is NP‐complete. All known exact solutions to this problem are exponential. In the __N‐line planar__ traveling salesman problem the points are on __N__ lines in the plane. In this paper, simple and efficient low‐degree polynomial solutions a
The n-line traveling salesman problem
✍ Scribed by Günter Rote
- Publisher
- John Wiley and Sons
- Year
- 1992
- Tongue
- English
- Weight
- 780 KB
- Volume
- 22
- Category
- Article
- ISSN
- 0028-3045
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✦ Synopsis
The special case of the Euclidean traveling salesman problem, where the n given points lie on a small number (N) of parallel lines in the plane, is solved by a dynamic programming approach in time nN, for fixed N, i.e., in polynomial time. This extends a result of Cutler (1980) for three lines. Such problems arise, for example, in the fabrication of printed circuit boards, where the distance traveled by a laser that drills holes in certain places of the board should be minimized. The parallelity condition can be relaxed to point sets that lie on N "almost parallel" line segments. We give a characterization of the allowed segment configurations by a set of forbidden subconfigurations.
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