recommender systems let' talk about my personal area of expertise--recommender systemsso systems that can recommend stuff to people based on what everybody else did we'll look at some examples of this and couple of ways to do it specificallytwo techniques called user-based and item-based collaborative filtering solet' dive in spent most of my career at bnb[podpn and jnecdpnand lot of what did there was developing recommender systemsthings like people who bought this also boughtor recommended for youand things that did movie recommendations for people sothis is something know lot about personallyand hope to share some of that knowledge with you we'll walk throughstep by stepcovering the following topicswhat are recommender systemsuser-based collaborative filtering item-based collaborative filtering finding movie similarities making movie recommendations to people improving the recommender' results