How to devise the perfect recommendation algorithm
http://www.economist.com/news/special-report/21716464-recommendations-must-be-neither-too-familiar-nor-too-novel-how-devise-perfect [www.economist.com]
2017-03-09 07:35
Unfortunately the answer is not contained within, but one interesting tidbit.
Spotify, a music-streaming service, offers a different model with its Discover Weekly playlist, which it produces for more than 100m customers.
By limiting the list to a couple of hours-worth of listening, and by setting an expiration date each week, Spotify creates a sense of scarcity to keep listeners engaged.