The note is to understand the concept/rise of CNN. Reference: http://colah.github.io/posts/2014-07-Conv-Nets-Modular/ Introduction convolutional neural network Lot’s of same neurons, similar as java function, which can be re-use X is the input layer (you can sense that is see/hear/smell, etc. for example, image, video, audio, document) Next Layer is not always fully connected with previous layer:  one neuron of type A neuron is not fully connected to each X.    B is not fully connected with All A  F is fully connected with all B Why so many same neurons? ThatRead More