Title
Physarum-inspired multi-commodity flow dynamics
Abstract
In wet-lab experiments, the slime mold Physarum polycephalum has demonstrated its ability to tackle a variety of computing tasks, among them the computation of shortest paths and the design of efficient networks. For the shortest path problem, a mathematical model for the evolution of the slime is available and it has been shown in computer experiments and through mathematical analysis that the dynamics solves the shortest path problem. In this paper, we generalize the dynamics to the network design problem. We formulate network design as the problem of constructing a network that efficiently supports a multi-commodity flow problem. We investigate the dynamics in computer simulations and analytically. The simulations show that the dynamics is able to construct efficient and elegant networks. In the theoretical part we show that the dynamics minimizes an objective combining the cost of the network and the cost of routing the demands through the network. We also give alternative characterizations of the optimum solution.
Year
DOI
Venue
2022
10.1016/j.tcs.2022.02.001
Theoretical Computer Science
Keywords
DocType
Volume
Physarum,Network design,Multi-commodity flow,Dynamical system
Journal
920
ISSN
Citations 
PageRank 
0304-3975
0
0.34
References 
Authors
0
9