it gives me error Unrecognized function or variable 'GWO'.

close all
clear all
clc
global A trn vald ;
T=100;
N=30;
lb=0;%
ub=1;
runs=30;
threshold=2;
fitfun=@AccSz; %fitness function 0.99Err+0.01*Selection Ratio

%% Problem Definition

fn={'arrhythmia','primary-tumor','australian','base_Brain_T91','hepatitis','horse-colic',...
    'KrvskpEW','BreastEW','spambase','SportsArticles','WaveformEW',...
    'WineEW','Zoo','CongressEW','Exactly','Exactly2','HeartEW','IonosphereEW','Lymphography'...
    'M-of-n','PenglungEW','SonarEW','SpectEW','Vote'};
SD=size(fn,1);
for j=1:SD
    libb=['BDD\' cell2mat(fn(j)) '.mat'];
   
   
% A=load('C:\Users\d\Downloads\archieve');
   % save('featuresall.mat')
        load('f')
 A=featuresall;
    nVar=size(featuresall,2)-1;
    
    r=randperm(size(featuresall,1));
    trn=r(1:floor(length(r)*0.8));  % split 80% train 20% test not k-fold
    vald=r(floor(length(r)*0.8)+1:end);
    
    dim=nVar;
    for i=1:runs
        display(['At run ', num2str(i)]);
        [t_GWO(i),Nf_GWO(i),outcome_GWO(i),best_GWO(i,:),GWO_conv(i,:)]=GWO(N,T,lb,ub,dim,fitfun);
        [acc_GWO(i),sensi_GWO(i),speci_GWO(i)]=Acc(best_GWO(i,:));

end
str=(strcat(char(fn{j}),'_',num2str(1)));
    save(str)
end

Answer 1

[Walter Roberson]

You need to install https://www.mathworks.com/matlabcentral/fileexchange/44974-grey-wolf-optimizer-gwo

I recommend using the Add-On Explorer to install it.

[essrra]

i installed it but it gives me error says Error using GWO

Too many output arguments.

[Walter Roberson]

Sorry, I do not seem to find a GWO implementation that has 5 outputs. I only find it with 3 outputs.