Techniques for ranking members based on an influence score are described. For example, an influence score process can access, from a database in an online social network, member data of a first member in response to receiving a ranking request of the first member. Additionally, a contribution factor for each first-degree connection of the first member can be determined. A centrality score for the first member can be determined based on the contribution factor for each first-degree connection of the first member. Moreover, an expertise score for the first member can be determined based on the member data of the first member. Furthermore, an influence score of the first member can be calculated based on the centrality score and the expertise score. Subsequently, a user interface is configured to cause a presentation, on a display of a device, of the ranking of the first member based on the influence score.