Error when using globalAveragePooling2dLayer in CNN

Question

Nour Mohamed 2020-9-7

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/590050-error-when-using-globalaveragepooling2dlayer-in-cnn

回答： Madhav Thakker 2020-9-10

I am writing a CNN code for an image classification problem and I want to use global average pooling. I found the globalAveragePooling2dLayer in this link: https://www.mathworks.com/help/deeplearning/ref/nnet.cnn.layer.globalaveragepooling2dlayer.html

However, when I try to use it within my Layers array, I get the following error:

Undefined function or variable 'globalAveragePooling2dLayer'.

Error in cnn_trial (line 64)

globalAveragePooling2dLayer

I have the Neural Networks toolbox and I have used the average pooling layer before. How can I fix this issue?

Thank you,

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Mohammad Sami 2020-9-7

This layer is available from version R2019b and onwards. Which version are you using ?

Nour Mohamed 2020-9-7

I am using R2018a version. Do I have to uninstall it and install the newer version?

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Answer 1

Madhav Thakker 2020-9-10

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/590050-error-when-using-globalaveragepooling2dlayer-in-cnn#answer_492691

Hi Nour,

The globalAveragePooling2dLayer was introduced in R2019b. As you are using R2018a, you are facing the Undefined function error.

You cannot use tools from a recent release in an older release. Either, you can upgrade to a new release or you can install the newer version alongside the your older R2018a version.

Hope this helps.