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What the TermCriteria means in ANN_MLP

asked 2017-03-21 23:16:44 -0500

wrp gravatar image

updated 2017-03-22 00:18:53 -0500

Hi,

Recently, I have used the ANN_MLP module. I read the document for this module. But I still doubt about this parameter. What the TermCriteria::COUNT / TermCriteria::MAX_ITER / TermCriteria::EPS specifically means in ANN_MLP ?

Thank you very much! : )

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answered 2017-03-22 04:01:14 -0500

berak gravatar image

the TermCriteria determines, when to stop the learning.

you can set a maximum iteration count (MAX_ITER) and a minimum error or network loss (EPS)

the flags specify, which criterion to use, you can set either of them, or both (MAX_ITER | EPS).

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The document says:

EPS is desired accuracy or change in parameters at which the iterative algorithm stops

So I don't know in ANN_MLP, it indicates accuracy or change in parameters?

wrp gravatar imagewrp ( 2017-03-22 04:17:30 -0500 )edit

it's accuracy.

berak gravatar imageberak ( 2017-03-22 04:28:42 -0500 )edit
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Not exactly correct.

Someone told me it's explained in the documentation of getTermCriteria() function of ANN_MLP.

The link is: http://docs.opencv.org/master/d0/dce/classcv_1_1ml_1_1ANN__MLP.html#a1d38045b36f3f1363573ad0fd18b82ae (http://docs.opencv.org/master/d0/dce/...)

wrp gravatar imagewrp ( 2017-03-22 04:39:06 -0500 )edit
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sorry, but i don't understand, what you mean here.

when in doubt, you look at the src , right ?

berak gravatar imageberak ( 2017-03-22 04:47:35 -0500 )edit

I get it, thank you

wrp gravatar imagewrp ( 2017-03-22 04:54:35 -0500 )edit
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ah, now i think i understand you, indeed, it's not the absolute error, but the change of it.

so, ok, you're right, i'm wrong. thanks for clarification.

berak gravatar imageberak ( 2017-03-22 04:59:05 -0500 )edit

that's it.

wrp gravatar imagewrp ( 2017-03-22 05:01:25 -0500 )edit
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Asked: 2017-03-21 23:13:03 -0500

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Last updated: Mar 22 '17