A Hybrid Predictive Strategy Carried through Simultaneously from Decision Space and Objective Space for Evolutionary Dynamic Multiobjective Optimization

Algorithm 1

Calculating the nondominated set by the prediction strategy based on center point.

Input:   and , the population in t-1 and t time step.

Output:  , the predicted non-dominated set in t+1 time step.

Step 1: Layer the populations, and , in t-1 and t time step, and then select the

individuals in the first layer as non-dominated set, and ;

Step 2: According to formula (5), calculate the center points of and

, and , respectively.

Step 3: According to formula (6), predict the non-dominated set in the t+1 time step,

.