An integrated hybrid metaheuristic model for the constrained scheduling problem

An Energy-efficient Mathematical Model for the Resource-constrained Project Scheduling Problem: An Evolutionary Algorithm

In this paper, we propose an energy-efficient mathematical model for the resource-constrained project scheduling problem to optimize makespan and consumption of energy, simultaneously. In the proposed model, resources are speed-scaling machines. The problem is NP-hard in the strong sense. Therefore, a multi-objective fruit fly optimization algorithm (MOFOA) is developed. The MOFOA uses the VIKO...

An Efficient Hybrid Metaheuristic for Capacitated p-Median Problem

Capacitated p-median problem (CPMP) is a well-known facility-location problem, in which p capacitated facility points are selected to satisfy n demand points in such a way that the total assigned demand to each facility does not exceed its capacity. Minimizing the total sum of distances between each demand point and its nearest facility point is the objective of the problem. Developing an effic...

A hybrid metaheuristic algorithm for the Integrated Vehicle and Crew Scheduling Problem

This work deals with the Integrated Vehicle and Crew Scheduling Problem (VCSP) in urban mass transit. The Vehicle Scheduling Problem (VSP) consists in creating a daily routine of operation for a fleet of vehicles of a company so that all timetabled trips are covered and the operational costs of such activity reduced, making the best use of the fleet. In the Crew Scheduling Problem (CSP) each cr...

A hybrid metaheuristic algorithm for the robust pollution-routing problem

Emissions resulted from transportation activities may lead to dangerous effects on the whole environment and human health. According to sustainability principles, in recent years researchers attempt to consider the environmental burden of logistics activities in traditional logistics problems such as vehicle routing problems (VRPs). The pollution-routing problem (PRP) is an extension of the VRP...

Metaheuristic methods in hybrid flow shop scheduling problem