Book selection algorithm?

Question

Algorithms

Hello. I was looking for another book (as always, I hung up for 30 minutes without choosing anything) and thought about the fact that it would be nice to create something like that, since there are free 2 weeks.
Can you suggest something about the creation of such systems, which, based on a variety of parameters, select something optimal. Where to look, what to learn. Maybe there are similar examples or, much better, literature on this topic .

Answer 1

The k-means algorithm for recommender systems immediately comes to mind , it is the easiest to implement. Selects books/movies/anything according to suitable parameters.

Answer 2

data science in terms of a vector, but Yandex music has been persistently, past the target for a couple of years, recommends