
…of research has been done on collaborative filtering (CF), and most popular approaches are based on low-dimensional factor models (model based matrix factorization. I will discuss these in detail). The CF techniques are broadly divided into 2-types:
…u do to turn that into a dendrogram which I have to look up on stackoverflow each time I do it. You basically turn it into a distance matrix and then you create something that tells you which things are connected to each other things hierarchically. So these are three standard steps you always have to do to create a dendrogram: