How to create a metric in Keras that return a multi-dimensional value?

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Track title: Puzzling Curiosities

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Chapters
00:00 Question
01:40 Accepted answer (Score 3)
02:11 Thank you

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Full question
https://stackoverflow.com/questions/4825...

Question links:
[save the predictions and true labels]: https://stackoverflow.com/questions/4707...
[output the error per label]: https://stackoverflow.com/questions/4721...

Accepted answer links:
[issue]: https://github.com/keras-team/keras/issu...
[here]: https://github.com/dolevshapira/Keras-Ut...

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Tags
#python #machinelearning #deeplearning #keras #confusionmatrix

#avk47