3 papers
cs.SI2026
Computing Absorbing-Frequency Centrality: Complexity, Estimators, and Scalable Algorithms for Stochastic Networks
Wencheng Bao, Eleftheria Kontou, Chrysafis Vogiatzis
In a stochastic network, where edges fail and weights may vary across realizations, the node of highest betweenness is itself random. Absorbing-frequency centrality (AFC) scores ea…
math.OC2026
Risk-Averse Stochastic User Equilibrium on Uncertain Transportation Networks
Wencheng Bao, Chrysafis Vogiatzis, Eleftheria Kontou
Extreme weather events, like flooding, disrupt urban transportation networks by reducing speeds and capacities, and by closing roadways. These hazards create regime-dependent uncer…
cs.SI2024
A Survey on Optimization Studies of Group Centrality Metrics
Mustafa Can Camur, Chrysafis Vogiatzis
Centrality metrics have become a popular concept in network science and optimization. Over the years, centrality has been used to assign importance and identify influential element…