sentence: This communication holds two main attributes , namely , ( i ) an indirect nonsymbolic form of communication where insects exchange information by modifying their environment and ( ii ) local information which is assessed by those insects that visits the immediate neighborhood.The general ACO technique involves initialization , traversing , pheromone deposition , and updating the pheromone.BCO [ 25 ] is an optimization technique under the swarm intelligence , a part of artificial intelligence which is based on the actions of individuals in various decentralized systems .