Multi-Swarm Whale Optimization Algorithm for Data Clustering Problems using Multiple Cooperative Strategies
Ravi Kumar Saidala, Nagaraju Devarakonda · International Journal of Intelligent Systems and Applications · 2018
Computational Intelligence (CI) is an as of emerging area in addressing complex real world problems.The WOA has taken its root from the collective intelligent foraging behavior of humpback whales (Megaptera Novaeangliae).The standard WOA is suffers from the selection of best agent while whales searching and encircling prey.This research paper deals with the multi-swarm cooperative strategies for finding the best agents which balances the two phase's exploration and exploitation.The performance of invoked Multi-Swarm cooperative strategies into standard WOA i.e, MsWOA is first benchmarked on a set of 23 standard mathematical benchmark function problems which includes 7 Uni-Modal, 6 Multi-modal and 10 fixed dimension multimodal functions.The obtained graphical and statistical results have been portrayed along with the previously established techniques.The obtained results depicts that the proposed cooperative strategies for WOA outperforms in solving optimization problems of standard benchmark functions.This paper also studies the numerical efficiency of proposed techniques on the problem of data clustering where 10 real data clustering problems have been taken from data repository https://archive.ics.uci.edu.data.Statistical results for the obtained cluster centroids, intra-cluster distances and inter-cluster distances confirms that the cooperative strategies for best whale agent selection improves the performance WOA for function optimization problems as well as data clustering problems.