%------------------------------- Reference --------------------------------
Liu Z, Wang H, Ding J, et al. Data Stream driven evolutionary algorithm for cost sensitive robust optimization over time[J]. Swarm and Evolutionary Computation, 2025, 94: 101880.
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% 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.
Run DDMFEA.m to acquire the results.
The initial theta values of two types of the Kriging models are both set as 5;
The range of theta values of two types of the Kriging models are both set as [10^{-5}, 10^5].