%------------------------------- Reference --------------------------------
Liu Z, Wang H. A data augmentation based Kriging-assisted reference vector guided evolutionary algorithm for expensive dynamic multi-objective optimization[J]. Swarm and Evolutionary Computation, 2022, 75: 101173.
%------------------------------- Copyright --------------------------------
% Copyright (c) 2021 HandingWangXD Group. Permission is granted to copy and
% use this code for research, noncommercial purposes, provided this
% copyright notice is retained and the origin of the code is cited. The
% code is provided "as is" and without any warranties, express or implied.
% This code is written by Zhening Liu.
Perform DKRVEA.m to acquire the results
Global.SerNum = 10 is the time step of PPS starting;
Global.PopObs = Global.D*2 is the number of observation points, where Global.D is the decision dimension.