convert knnclassify to fitcknn

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Frisda Sianipar
Frisda Sianipar 2021-4-29
评论： rashigha Shankar 2022-7-14
please help me to convert knnclassify to fitcknn
x=readtable("datatraining.xlsx");
latih=x;
group=latih(:,3);
latih = [latih(:,1) latih(:,2)];
for i = 1 : 80
y=readtable("datatesting.xlsx");
sampel = y;
test = [sampel(:,1) sampel(:,2)];
%sampel = [2.6136 0.1284 1.3017 -0.8089 0.0441 -0,2084];
hasil=knnclassify(test,latih,group);
end
nama = "hasil KNN.xlsx";
hasil = [sampel(:,1) sampel(:,2) sampel(:,3) hasil];
xlswrite(nama,hasil);
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Frisda Sianipar
Frisda Sianipar 2021-5-6
i have tried use fitcknn but still have error sir

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采纳的回答

Walter Roberson
Walter Roberson 2021-5-6
Ran in:
x = readtable("https://www.mathworks.com/matlabcentral/answers/uploaded_files/600525/datatraining.xlsx");
y = readtable("https://www.mathworks.com/matlabcentral/answers/uploaded_files/600520/datatesting.xlsx");
traindata = x{:,2};
traingroup = x{:,3};
testdata = y{:,2};
testgroup = y{:,3};
Mdl = fitcknn(traindata, traingroup,'Distance','euclidean','NumNeighbors',8,'Standardize',1,'BreakTies','nearest');
hasil = predict(Mdl, testdata);
nama = "hasil KNN.xlsx";
y.hasil = hasil;
writetable(y, nama)
does_it_match = strcmp(hasil, testgroup);
correct_percent = mean(does_it_match) * 100
correct_percent = 73.7500
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rashigha Shankar
rashigha Shankar 2022-7-14
@Walter Roberson sir can you help me with a problem it is also same,the question link is given below
https://in.mathworks.com/matlabcentral/answers/1760240-can-somebody-please-help-me-how-to-convert-knncassify-function-to-fitknn
kindly check this and if you can please give a solution

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