Decision Tree to If-Else Rules

Question

Amrit Kumar Verma 2019-3-6

3
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https://ww2.mathworks.cn/matlabcentral/answers/448616-decision-tree-to-if-else-rules

回答： Koorosh Aslansefat 2020-5-20

Is there any method to convert directly the decision tree from Classification Tree Viewer to If-Else rules ?

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Mario Buser 2019-7-9

Would be interested in a solution as well. WEKA, for example, is able to export if/else statements.

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Answer 1

Koorosh Aslansefat 2020-5-20

0
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https://ww2.mathworks.cn/matlabcentral/answers/448616-decision-tree-to-if-else-rules#answer_434203

在 MATLAB Online 中打开

I am not sure what exactly you want but the following code can be useful considering that you saved the decision tree as "tc".

CP = tc.CutPoint;
NC = tc.NodeClass;
for ii = 1:size(CP,1)
    if ~isnan(CP(ii))
        fprintf('if x%d < %f then node %d elseif x%d >= %f then node %d else %d \n',str2num(NC{ii}),CP(ii),ii+1,str2num(NC{ii}),CP(ii), ii+2,ii)  
    elseif isnan(CP(ii))
        fprintf('Class = %d \n',str2num(NC{ii}))   
    end
end