Skillet (band) Tour). In fall of 2009, Skillet began touring with Hawk Nelson, Decyfer Down, and The Letter Black to promote Skillet's album "Awake". The Awake & Alive Tour encompassed 52 cities from October through January. Skillet appeared at the 2009 Night of Joy Christian rock festival at Disney's Hollywood Studios at Walt Disney World. This marked the band's first absence from Universal Studios Orlando's Rock the Universe in five years due to conflicting schedules. However, they were able to perform the following year, in 2010. On September 26, 2009, Skillet appeared at Awakening Music Festival in Leesburg, Virginia, alongside Jeremy Camp,
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".