Tri-level optimization problems are optimization problems with three nested hierarchical structures, where in most cases conflicting objectives are set at each level of hierarchy. Such problems are common in management, engineering designs and in decision making situations in general, and are known to be strongly NP-hard. Existing solution methods lack universality in solving these types of pro...

In this paper, we consider solving a telecommunication problem called a transmission link selection problem. The problem is a multiobjective scheduling problem where a set of data components is to be transferred using distinct wireless communication links. The objective of the problem is to minimize both the time used for the transfers and the costs of the transfers. First, we discuss dealing w...

One of the most important problems for distribution companies is to find the best locations for depots and to find proper routes for transportation vehicles and to optimize supply network. This study intends to develop a model for the problem of location-routing in post offices. So, a new Bi-Objective Location-Routing Problem for Locating Town Post Office and Routing Parcels is defined. This pr...

A number of decisions are needed for military target engagement in both defensive and offensive situations. These decisions are to be made during target search, detection, acquisition and identification, and typically require the integration of multiple disciplines and the resolution of multiple, conflicting objectives. A departure from the conventional one-time-shot optimization is necessary f...