Traveling salesman problem with a center

Phys Rev E Stat Nonlin Soft Matter Phys. 2005 Jun;71(6 Pt 2):067701. doi: 10.1103/PhysRevE.71.067701. Epub 2005 Jun 10.

Abstract

We study a traveling salesman problem where the path is optimized with a cost function that includes its length L as well as a certain measure C of its distance from the geometrical center of the graph. Using simulated annealing (SA) we show that such a problem has a transition point that separates two phases differing in the scaling behavior of L and C, in efficiency of SA, and in the shape of minimal paths.