Author

Classification indicator

User Type

Method

Toral et al. (2010) [26]

Out-degree, betweenness

Edge users, general users, core users

Network analysis

Füller et al. (2014) [6]

Out-degree, in-degree, the number of contribution

Socializer, idea generator, master, efficient contributor, passive ides generator, passive commentator.

Social network analysis and Cluster analysis

Liu et al. (2016) [27]

User engagement behavior (contribution value, participation level)

Potential users, Core Users, General Users, And Powerful Users

Regression analysis

Qi et al. (2016) [28]

Idea submitted, Scores, comment submitted

Core Users, Active Social Users, Glamorous Social Users, Active and Innovative Users, Effective Innovative Users, Passive Users

Cluster analysis

Guo et al. (2017) [7]

The number, popularity, and impact of user creation in the community

Project leader, Active designer, Generalist, Communicator, Passive designer, Observer

Social network analysis and Cluster analysis

Fuger et al. (2017) [15]

Out-degree, in-degree, the number of contribution

Collaborator, Contributor, Allrounder, Passive User

Cluster and social network analysis