7 papers
Memory-cognizant generalization to Simon's random-copying neutral model
Joseph D. O'Brien, James P. Gleeson
Simon's classical random-copying model, introduced in 1955, has garnered much attention for its ability, in spite of an apparent simplicity, to produce characteristics similar to t…
Hierarchical route to the emergence of leader nodes in real-world networks
Joseph D. O'Brien, Kleber A. Oliveira, James P. Gleeson +1
A large number of complex systems, naturally emerging in various domains, are well described by directed networks, resulting in numerous interesting features that are absent from t…
A complex networks approach to ranking professional Snooker players
Joseph D. O'Brien, James P. Gleeson
A detailed analysis of matches played in the sport of Snooker during the period 1968-2020 is used to calculate a directed and weighted dominance network based upon the correspondin…
A Generalization of the Classical Kelly Betting Formula to the Case of Temporal Correlation
Joseph D. O'Brien, Kevin Burke, Mark E. Burke +1
For sequential betting games, Kelly's theory, aimed at maximization of the logarithmic growth of one's account value, involves optimization of the so-called betting fraction . I…
Quantifying Uncertainty in a Predictive Model for Popularity Dynamics
Joseph D. O'Brien, Alberto Aleta, Yamir Moreno +1
The Hawkes process has garnered attention in recent years for its suitability to describe the behavior of online information cascades. Here, we present a fully tractable approach t…
Spreading of Memes on Multiplex Networks
Joseph D. O'Brien, Ioannis K. Dassios, James P. Gleeson
A model for the spreading of online information or "memes" on multiplex networks is introduced and analyzed using branching-process methods. The model generalizes that of [Gleeson…