In the previous chapters, we took a deep dive into data mining and web development with Julia. I hope you enjoyed a few relaxing rounds of Six Degrees of Wikipedia while discovering some interesting articles. Randomly poking through the millions of Wikipedia articles as part of a game is a really fun way to stumble upon interesting new content. Although I'm sure that, at times, you've noticed that not all the articles are equally good—maybe they're stubs, or subjective, or not so well written, or simply irrelevant to you. If we were able to learn about each player's individual interests, we could filter out certain Wikipedia articles, which would turn each game session into a wonderful journey of discovery.
It turns out that we're not the only ones struggling with this—information discovery...