function [Fitness,I,C] = CalFitness(Population,kappa)
% Calculate the fitness of each solution

%------------------------------- Copyright --------------------------------
% Copyright (c) 2023 BIMK Group. You are free to use the PlatEMO for
% research purposes. All publications which use this platform or any code
% in the platform should acknowledge the use of "PlatEMO" and reference "Ye
% Tian, Ran Cheng, Xingyi Zhang, and Yaochu Jin, PlatEMO: A MATLAB platform
% for evolutionary multi-objective optimization [educational forum], IEEE
% Computational Intelligence Magazine, 2017, 12(4): 73-87".
%--------------------------------------------------------------------------

% This function is written by Wenhua Li

    PopObj = Population.objs;
    N = size(PopObj,1);
    PopObj = (PopObj-repmat(min(PopObj),N,1))./(repmat(max(PopObj)-min(PopObj),N,1));
    I      = zeros(N);
    for i = 1 : N
        for j = 1 : N
            I(i,j) = max(PopObj(i,:)-PopObj(j,:));
        end
    end
    C = max(abs(I));
    Fitness = sum(-exp(-I./repmat(C,N,1)/kappa)) + 1;
end