Interest graph

Suppose two people have similar interests, such as photo and they like the same music. So there is a relationship between them based on their interests which can be shown by interest graph. Vertices correspond to entities, and edges are the relationships between entities.
Red edges are the part of an interest graph, where relations (red edges) could be between (1) user and interest and (2) between users. Blue edges are the part of a social graph, where there are relations only between users.

An interest graph is a digital portrayal of an individual's specific interests.[1] Its perceived utility and value stem from the premise that a person's interests form a significant component of their personal identity. They can be used as indicators of various aspects, such as a person's preferences regarding activities, purchases, destinations, as well as who they may choose to meet, follow, or support politically.[2]

  1. ^ rr11. "How the Interest Graph will shape the future of the web" Archived 2015-03-20 at the Wayback Machine, MIT Entrepreneurship Review, Cambridge, 1 April 2011. Retrieved on 11 March 2013.
  2. ^ Tullman, Howard A. "Where Social Media Will Take Us in 2013", Inc.com, 28 December 2012. Retrieved on 11 March 2013.