Introduction

Abstract Decision-making is a difficult task, and it requires careful analysis of the underlying problem at hand. The presence of various alternative solutions makes the decision-making problem even more difficult as all the available solutions are not optimal. Since resources, time, and money are limited, or even sometimes scarce, the quest for optimal choices is of paramount importance for the welfare of the mankind. Optimization is a mathematical tool and an indispensable part of the decision-making process which assists in finding optimal (or near optimal) solutions from the set of available solutions.