Why do Instagram Users Tag Friends in Comments?

摘要: Tagging a friend in comment is one of the well-known mechanisms that leads user interaction social media. This paper investigates current practice tagging Instagram by collecting large-scale data includes 9 K posts and their 4 M comments shared 3 M users. Our analysis reveals 54.8% contain tagging, meaning widely-used Instagram. To shed light on why users tag friends comments, we develop learning-based model classifies motivation into following motivations: (i) information-oriented, (ii) relationship-oriented, (iii) discussion-oriented. We then apply our to with data, reveal often used for interpersonal communication friends.