“…Through an automatic text processing system, relevant topics could be mined from textual conversations in order to create user profiles with interest information. Personal intelligent assistance (Schiaffino & Amandi, 2009), Information filtering (Yang, Nie, Shen, Yu, & Kou, 2011), and item recommendation (Christensen & Schiaffino, 2011;Kahng, Lee, & Lee, 2011) are some examples of the extensive applicability of these user profiles.…”