Skillet (band) international tour in January and February 2011 visiting Australia, New Zealand's Parachute Music Festival, and Japan. In October 2011, the band continued their "Awake and Alive" tour with Disciple, We as Human, and Manafest. Skillet headlined the Winter Jam Tour 2012 for the central and eastern parts of the United States. Starting on August 13, 2013, Skillet toured with Shinedown, Papa Roach, and In This Moment on the Carnival of Madness Tour. In October and November, the band arrives Europe supporting Nickelback's tour in twenty one shows. The band closed the year headlining their own tour in Russia and a
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".