Holistic User Context-Aware Recommender Algorithm

Algorithm 5

isActive.

(1)	isActive
(2)	INPUT: u (profile of user)
(3)	i (item or set of items)
(4)	OUTPUT: bool (True or False)
(5)	Begin
(6)	isActive ⟵ False
(7)	ACTIONS ⟵ {click, search, rate, bought}
(8)	A ⟵ {x: x is recent action on i by u AND x ∈ ACTIONS}
(9)	if (A ≠ ∅)):
(10)	isActive ⟵ True
(11)	return isActive
(12)	End