## Chapter-13 Deep Learning for Coders with FastAI & Pytorch

Keypoints What is Convolution? Convolution is one of the main building blocks of a CNN. The term convolution refers to the mathematical combination of two functions to produce a third function. It merges two sets of information. In the case of a CNN, the convolution is performed on the input data with the use of a “filter” or “kernel”(these terms are used interchangeably) to then produce a “feature map”. What are Convolutional Neural Networks (CNN)?...