Stochastic leader gravitational search algorithm for enhanced adaptive beamforming technique

Soodabeh Darzi, Mohammad Tariqul Islam, Sieh Kiong Tiong, Salehin Kibria, Mandeep Singh

Research output: Contribution to journalArticle

3 Citations (Scopus)


In this paper, stochastic leader gravitational search algorithm (SL-GSA) based on randomized k is proposed. Standard GSA (SGSA) utilizes the best agents without any randomization, thus it is more prone to converge at suboptimal results. Initially, the new approach randomly choses k agents from the set of all agents to improve the global search ability. Gradually, the set of agents is reduced by eliminating the agents with the poorest performances to allow rapid convergence. The performance of the SL-GSA was analyzed for six well-known benchmark functions, and the results are compared with SGSA and some of its variants. Furthermore, the SLGSA is applied to minimum variance distortionless response (MVDR) beamforming technique to ensure compatibility with real world optimization problems. The proposed algorithmdemonstrates superior convergence rate and quality of solution for both real world problems and benchmark functions compared to original algorithm and other recent variants of SGSA.

Original languageEnglish
Article numbere0140526
JournalPLoS ONE
Issue number11
Publication statusPublished - 09 Nov 2015

All Science Journal Classification (ASJC) codes

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)
  • General

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