TY - GEN

T1 - Maintaining population diversity in brain storm optimization algorithm

AU - Cheng, Shi

AU - Shi, Yuhui

AU - Qin, Quande

AU - Ting, T. O.

AU - Bai, Ruibin

N1 - Publisher Copyright:
© 2014 IEEE.

PY - 2014/9/16

Y1 - 2014/9/16

N2 - Swarm intelligence suffers the premature convergence, which happens partially due to the solutions getting clustered together, and not diverging again. The brain storm optimization (BSO), which is a young and promising algorithm in swarm intelligence, is based on the collective behavior of human being, that is, the brainstorming process. Premature convergence also happens in the BSO algorithm. The solutions get clustered after a few iterations, which indicate that the population diversity decreases quickly during the search. A definition of population diversity in BSO algorithm to measure the change of solutions' distribution is proposed in this paper. The algorithm's exploration and exploitation ability can be measured based on the change of population diversity. Two kinds of partial re-initialization strategies are utilized to improve the population diversity in BSO algorithm. The experimental results show that the performance of the BSO is improved by these two strategies.

AB - Swarm intelligence suffers the premature convergence, which happens partially due to the solutions getting clustered together, and not diverging again. The brain storm optimization (BSO), which is a young and promising algorithm in swarm intelligence, is based on the collective behavior of human being, that is, the brainstorming process. Premature convergence also happens in the BSO algorithm. The solutions get clustered after a few iterations, which indicate that the population diversity decreases quickly during the search. A definition of population diversity in BSO algorithm to measure the change of solutions' distribution is proposed in this paper. The algorithm's exploration and exploitation ability can be measured based on the change of population diversity. Two kinds of partial re-initialization strategies are utilized to improve the population diversity in BSO algorithm. The experimental results show that the performance of the BSO is improved by these two strategies.

KW - Brain storm optimization

KW - convergence

KW - exploration/exploitation

KW - population diversity

KW - swarm intelligence

UR - http://www.scopus.com/inward/record.url?scp=84908577883&partnerID=8YFLogxK

U2 - 10.1109/CEC.2014.6900255

DO - 10.1109/CEC.2014.6900255

M3 - Conference contribution

AN - SCOPUS:84908577883

T3 - Proceedings of the 2014 IEEE Congress on Evolutionary Computation, CEC 2014

SP - 3230

EP - 3237

BT - Proceedings of the 2014 IEEE Congress on Evolutionary Computation, CEC 2014

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 2014 IEEE Congress on Evolutionary Computation, CEC 2014

Y2 - 6 July 2014 through 11 July 2014

ER -