A Master-Slave Binary Grey Wolf Optimizer for Optimal Feature Selection in Biomedical Data Classification

Algorithm 1

Pseudocode for MSBGWO.

Begin

Randomly initialize the position of the wolves.

Sort the wolves in ascending order of fitness

= fittest

=2^nd fittest

=3^rd fittest

While the number of iterations is not exceeded

  Determine a as in Equation(18)

Sort the wolves in ascending order of fitness

  Masters = top half of the pack(fitness)

  Slave = remaining half of the pack

  Slaves update their positions using Equations (13), (15) and (16)

for each wolf

  Determine A,C using Equation (3) and (4)

  Determine D for , , and using Equations (10), (11) and (12)

  Determine X1,X2,X3 using Equations (7), (8) and (9)

  Determine the position using Equation (6) and (16)

End

  Determine the fitness of each wolf

  Update the positions of , , and

End

Return as solution

End