3 papers
cs.SI2016
In the mood: the dynamics of collective sentiments on Twitter
Nathaniel Charlton, Colin Singleton, Danica Vukadinović Greetham
We study the relationship between the sentiment levels of Twitter users and the evolving network structure that the users created by @-mentioning each other. We use a large dataset…
math.OC2016
Total positive influence domination on weighted networks
Danica Vukadinović Greetham, Nathaniel Charlton, Anush Poghosyan
We are proposing two greedy and a new linear programming based approximation algorithm for the total positive influence dominating set problem in weighted networks. Applications of…
physics.soc-ph2016
Separating temporal and topological effects in walk-based network centrality
Ewan Colman, Nathaniel Charlton
The recently introduced concept of dynamic communicability is a valuable tool for ranking the importance of nodes in a temporal network. Two metrics, broadcast score and receive sc…