Hierarchical Community Detection in Bipartite Networks

Collection of recent papers on social network analysis, misinformation, LLM-driven simulations, recommendation incentives, and methods for detecting coordinated online behavior. Key security-relevant contributions: a new modularity-based objective (Qbg) for hierarchical community detection in bipartite/weighted networks useful for uncovering hidden hierarchical structures in actor–item systems; a comprehensive survey of coordinated online behavior outlining detection frameworks, methods, and open challenges; empirical findings that LLM simulations overstate belief–sharing links and largely忽ore