max pooling -> only one pixel is updated
easy! derivative propagates from Yl to Zl
one filter
many filters
a finite set of transformations
more sildes from http://www.cs.cmu.edu/~bhiksha/courses/deeplearning/Spring.2019/www/slides.spring19/lec10.CNN.pdf
(from 19 fall video)
weighted sum along layers (depth)
data augumentation
first layer output
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