My question is: what does the second equation doing? is it for normalization or what? Thanks in advance.

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FAS 2018-1-29

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关闭： MATLAB Answer Bot 2021-8-20

O_E = M * X;

E = ( sum( O_E.^ 2 ) ) ./ ( sum( X .^ 2 ) );

Where:

M = 100*100;

X = 100*500;

O_E = 100*500;

E = 1*500

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FAS 2018-1-29

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Rik 2018-1-29

You will have to provide more context. It is not very difficult to work out what the second line is doing (just read the documentation), but from your question it is impossible to say why it is doing that.

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