In social network analysis, centrality is a key concept used to identify the most important or influential members within a network. Influencers, who hold significant sway over the opinions and behaviors of others, are generally identified by their central position within the network. Centrality can be measured in various ways, including degree centrality (number of direct connections), betweenness centrality (control over information flow), and closeness centrality (proximity to other members). Identifying and leveraging influencers through centrality helps maximize the impact of social media campaigns and engagement strategies.

References:

"Centrality in Social Networks: Concepts and Applications" by Linton C. Freeman

Hootsuite: "How to Identify Social Media Influencers for Your Brand"