Skillet (band) nominated and won a Dove Award for Rock Song of the Year for their song "Sick of It". "Vital Signs", a compilation album released exclusively in Europe, was released October 13, 2014. On February 16, 2015 Skillet announced they were writing material for a new album with recording to begin in June with a potential release in the late half of 2015 or early 2016. On April 8, Skillet released a preview of a new song, later revealed to be called "Out of Hell", on their social media pages. On May 20, 2016 the album's title, "Unleashed", was announced and
Item-item collaborative filtering Item-item collaborative filtering Item-item collaborative filtering, or item-based, or item-to-item, is a form of collaborative filtering for recommender systems based on the similarity between items calculated using people's ratings of those items. Item-item collaborative filtering was invented and used by Amazon.com in 1998. It was first published in an academic conference in 2001. The authors of that paper, Badrul Sarwar, George Karypis, Joseph Konstan, and John Riedl, won the 2016 "Test of Time Award" for their paper "Item-based collaborative filtering recommendation algorithms". The International World Wide Web Conference committee stated that "this outstanding paper has had a considerable real-world impact".