algorithms for biobjective shortest path problems in fuzzy networks

ALGORITHMS FOR BIOBJECTIVE SHORTEST PATH PROBLEMS IN FUZZY NETWORKS

We consider biobjective shortest path problems in networks with fuzzy arc lengths. Considering the available studies for single objective shortest path problems in fuzzy networks, using a distance function for comparison of fuzzy numbers, we propose three approaches for solving the biobjective prob- lems. The rst and second approaches are extensions of the labeling method to solve the sing...

A comparison of solution strategies for biobjective shortest path problems

We consider the biobjective shortest path (BSP) problem as the natural extension of the single objective shortest path problem. BSP problems arise in various applications where networks usually consist of large numbers of nodes and arcs. Since obtaining the set of efficient solutions to a BSP problem is more difficult (i.e. NP-hard and intractable) than solving the corresponding single objectiv...

Parallel algorithms for geometric shortest path problems

The original goal of this project was to investigate and compare the experimental performance and ease of programming of algorithms for geometric shortest path finding using shared memory and message passing programming styles on a shared memory machine. However, due to the extended unavailability of a suitable shared memory machine, this goal was only partially met, though a system suitable fo...

Engineering shortest-path algorithms for dynamic networks

The problem of updating shortest paths in networks whose topology dynamically changes over time is a core functionality of many nowadays networked systems. In fact, the problem finds application in many real-world scenarios such as Internet routing and route planning in road networks. In these scenarios, shortest-path data are stored in different ways and have to be updated whenever the underly...

Two optimal algorithms for finding bi-directional shortest path design problem in a block layout

In this paper, Shortest Path Design Problem (SPDP) in which the path is incident to all cells is considered. The bi-directional path is one of the known types of configuration of networks for Automated Guided Vehi-cles (AGV).To solve this problem, two algorithms are developed. For each algorithm an Integer Linear Pro-gramming (ILP) is determined. The objective functions of both algorithms are t...

Approximation algorithms for geometric shortest path problems a