What are Tensor Diagrams? Machine learning involves a lot of tensor manipulation, and it's easy to lose track of the bigger picture when manipulating high-dimensional data using notation designed for vectors and matrices. It turns out all the trouble with tensors disappears when you instead represent them using graphs: This book aims to standardize the notation for tensor diagrams by rewriting the classical "Matrix Cookbook" using this notation. Tensor diagrams are better than alternative notati...