One thing I've noticed with the recommendation engine is that it doesn't recognize when its data set is too small. There are quite a few books where I look at t

One thing I've noticed with the recommendation engine is that it doesn't recognize when its data set is too small. There are quite a few books where I look at the "Readers also enjoyed" list and can identify it as simply a list of other books I and one of my siblings read recently. For example: https://www.goodreads.com/book/similar/1836622-dandelion-caper-the https://www.goodreads.com/book/similar/1836622-dandelion-cap... It's a book that my brother and I recently re-read, and the recommendations are...four other books that I and my brother read recently. Granted, the majority are the same genre, but two aren't. They're just...books we both recently gave 4 stars.