Fig. 2From: Link weights recovery in heterogeneous information networksIllustration of the construction of graphs based on Twitter interactions where four users interact with each other through three types of interactions: retweet RT, reply RP and mention MT; and write some hashtags in their post UH. The underlying HIN is such that \({\mathcal {V}}=\){users, hashtags} and \({\mathcal {E}}=\){RT, RP, MT, UH}. The four graphs associated with the types of actions are displayed separately for convenienceBack to article page