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\chapter{Improved Artificial Bee Colony Metaheuristic}
\label{Chapter:3}
%\lhead{CHAPTER 3. \emph{}}

\section{Introduction}
With massive impact and huge success, Computational Intelligence (CI) based metaheuristic became  an effective tool to tackle increasingly complex real-world optimization problems. In nature, many species are characterized by swarm behaviour, which is also the key features of social insects  like bees, wasps or ants  etc.
Communication behaviour between individual insects in a colony of social insects will  contribute to the collective intelligence, thus the term  \emph{Swarm Intelligence} (SI)- an integral branch of CI comes into existence. SI  is a  part  of  study  based on actions of individuals  in several decentralized systems, which are composed of physical or virtual elements  that communicate, cooperate, collaborate among themselves and exchange information or knowledge to perform some tasks in their environment.

