Community structure research focuses on understanding the patterns of interactions and relationships between individuals within a network. This research area explores how individuals cluster together and form communities or subgroups based on common characteristics, interests, or behaviors. Community structure research often involves analyzing network data to identify these communities, studying the dynamics of relationships within and between communities, and exploring the implications of community structures for various phenomena such as information flow, diffusion of ideas, and social influence. This research area is interdisciplinary, drawing on methods and theories from fields such as sociology, computer science, and network science.