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Mathematical Problems in Engineering
Volume 2015, Article ID 345049, 23 pages
Research Article

A Universal Concept for Robust Solving of Shortest Path Problems in Dynamically Reconfigurable Graphs

Institute of Smart Systems Technologies, Transportation Informatics Group (TIG), Universität Klagenfurt, Klagenfurt, Austria

Received 27 May 2015; Accepted 4 November 2015

Academic Editor: John D. Clayton

Copyright © 2015 Jean Chamberlain Chedjou and Kyandoghere Kyamakya. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


This paper develops a flexible analytical concept for robust shortest path detection in dynamically reconfigurable graphs. The concept is expressed by a mathematical model representing the shortest path problem solver. The proposed mathematical model is characterized by three fundamental parameters expressing (a) the graph topology (through the “incidence matrix”), (b) the edge weights (with dynamic external weights’ setting capability), and (c) the dynamic reconfigurability through external input(s) of the source-destination nodes pair. In order to demonstrate the universality of the developed concept, a general algorithm is proposed to determine the three fundamental parameters (of the mathematical model developed) for all types of graphs regardless of their topology, magnitude, and size. It is demonstrated that the main advantage of the developed concept is that arc costs, the origin-destination pair setting, and the graph topology are dynamically provided by external commands, which are inputs of the shortest path solver model. This enables high flexibility and full reconfigurability of the developed concept, without any retraining need. To validate the concept developed, benchmarking is performed leading to a comparison of its performance with the performances of two well-known concepts based on neural networks.