We consider a variation of the well-known traveling salesman problem in which there are multiple agents who all have to tour whole set nodes same graph, while obeying node- and edge-capacity constraints require that must not crash. simplest model input is an undirected graph with capacities equal one. A solution synchronized called agency. Our puts similar relation as so-called evacuation probl...

The development of convergent technology makes the drone expected to become a commercial delivery method for terminal logistics distribution. Although industry has begun experiment with coordinated transportation drones and vehicles, some limited assumptions have been made reduce complexity synchronization. This paper studies mathematical formulations efficient solution methodologies multi-visi...

the date of receipt and acceptance should be inserted later Abstract. When a column generation approach is applied to decomposable mixed integer programming problems, it is standard to formulate and solve the master problem as a linear program. Seen in the dual space, this results in the algorithm known in the nonlinear programming community as the cutting-plane algorithm of Kelley and Cheney-G...

We consider online Vehicle Routing Problems (VRPs). The problems are online because the problem instance is revealed incrementally. After providing motivations for the consideration of such online problems, we first give a detailed summary of the most relevant research in the area of online VRPs. We then consider the online Traveling Salesman Problem (TSP) with precedence and capacity constrain...

An Eflective Heuristic Algorithm for the Traveling. THE SYMMETRIC traveling-salesman problem is: Given an n by n symmetric matrix of.symmetric traveling salesman problem. However, the design and implementation of an algorithm based on this heuristic is not trivial. There are many.This article is about the heuristic for the travelling salesman problem. An Effective Heuristic Algorithm for the Tr...

Abstract Over the past decade, electric vehicles (EVs) have been considered in a growing number of models and methods for vehicle routing problems (VRPs). This study presents comprehensive survey EV their many variants. We only consider which each may visit multiple vertices be recharged during trip. The related literature can roughly divided into nine classes: Electric traveling salesman probl...

Trajectory planning is of great value and yet challenging for multirotor unmanned aerial vehicle (UAV) applications in a complex urban environment, mainly due to the complexities handling cluttered obstacles. The problem further complicates itself context autonomous multi-UAV trajectory considering conflict avoidance future city applications. To tackle this problem, paper introduces cooperative...