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tanjuntao/mapFeature.m

Last active October 13, 2018 01:07
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MatLab中如何mapFeature，即：将少数的特征扩展出众多的高次项特征。
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mapFeature.m
function out = mapFeature(X1, X2)
degree = 6;
out = ones(size(X1(:,1)));
for i = 1:degree
for j = 0:i
out(:, end+1) = (X1.^(i-j)).*(X2.^j);
end
end
end
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