Comment by hardtke

Former Pandora employee. The music recommendation team was amazing when I worked there, and the use of global song frequency capping across seeds helps prevent too much repetition at a user level but I agree on the genre bleed. They may have changed it but the music recommender was an ensemble model that polled 30 or so distinct models that would provide their own next song recommendation. One of the last resort recommenders used only the music genome data for the song (no collaborative filtering).