Research Article

An Indicator and Decomposition Based Steady-State Evolutionary Algorithm for Many-Objective Optimization

Algorithm 4

contribution calculation.
Input: :  The combined population; : Reference vector.
Output:  : Contribution.
(1) for   to   do
(2)  for   to   do
(3)     Calculate the utility function value  
(4)   Calculate between the individual and
     the reference vector using Eq. (2)
(5)  end for
(6)    Find the best utility function value  
(7)  
(8)    Calculate contribution of each individual  
(9)  
(10) end  for
(11) return