Cross -validation implemented in the the nprtool

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Yogini Prabhu 2021-5-24

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回答： SM 2022-1-12

Please let know how is Cross -validation implemented in the the code of classification of patterns at nprtool (Deep Learning Toolbox)?

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John D'Errico 2021-5-30

Why ask the exact same question twice? PLEASE DON"T DO IT A THIRD TIME.

Yogini Prabhu 2021-6-3

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Hi John,

I am sorry for repeating my question multiple times,

I was in urgent need of the query resolution,

and at time of submitting the Q, I might of encountered network error.

so I might have repeared the action such that at least one of Q is uploaded.

However, capitals is shouting (now as per rules of Q&A too).

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回答（3 个）

Rishik Ramena 2021-5-26

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编辑：Rishik Ramena 2021-5-27

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If you want to check the implementations of uncompiled matlab functions, use the type command from the MATLAB command window. For the nprtool,

type nprtool

But this wouldn't work for compiled in-built functions.

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Walter Roberson 2021-5-29

Shallow neural networks do not exist in the Statistics and Machine Learning toolbox; they are only in the Deep Learning Toolbox (which used to be named the Neural Network toolbox)

Yogini Prabhu 2021-5-30

okay! question is corrected as above with accuracy.

what about the answer?

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Walter Roberson 2021-6-4

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nprtool uses traincsg(), which does not do cross-validation.

Therefore the answer to how Cross-Validation (CV) is done with nprtool is that CV is not done for nprtool.

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SM 2022-1-12

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Hi,

I think nprtool default cross-validation techniuqe is "hold out". It seems that for k-fold cross validation you should export the script and modify it.

Have a look at this link, you may find it useful.