Is mapstd the same as Zcore ? what is the reverse function?

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farzad 2015-3-22

评论： farzad 2015-3-28

Hi All

for my work , I should apply zcore to my target matrix , that is a 4x1055 matrix , the zcore I apply is like :

[ tc meanT stdT] = zscore(tc)

and for rolling back I do :

an = meanT + stdT'* an';

I just wanted to know if the mapstd works the same and if the above is correct ?

thank you very much

farzad 2015-3-22

I tried

an = meanT + stdT* tc';

and

an = meanT .+ stdT* tc';

but unsuccessful

Star Strider 2015-3-22

They are not the same. The most notable difference is that mapstd operates on rows, while zscore operates on columns.

If you are using neural networks, use mapstd for consistency with other neural network functions.

Greg Heath 2015-3-27

I am confused about whether or not you need clarification.

 help mapstd
 doc mapstd
 type mapstd

The latter should have the name of the coder. However, I can probably answer any further clear-cut questions.

Greg

farzad 2015-3-28

thank you dear Greg , with the other tutorial, I am done , and got my answer ,thank you very much

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