62 citations · 237 across the 31 of their papers we have counts for
13 papers · 1 filter
Metastable opinion dynamics with hidden preferences: an Ising model with neutral agents
Simone Baldassarri, Vanessa Jacquier, Alessandro Zocca
We introduce a new Ising-type framework for opinion dynamics that explicitly separates private preferences from publicly expressed binary opinions and naturally incorporates neutra…
Critical configurations of the hard-core model on square grid graphs
Simone Baldassarri, Vanessa Jacquier, Alessandro Zocca
We consider the hard-core model on a finite square grid graph with stochastic Glauber dynamics parametrized by the inverse temperature . We investigate how the transition betwee…
Ising model on clustered networks: A model for opinion dynamics
Simone Baldassarri, Anna Gallo, Vanessa Jacquier +1
We study opinion dynamics on networks with a nontrivial community structure, assuming individuals can update their binary opinion as the result of the interactions with an external…
Weighted Dyck paths for nonstationary queues
Gianmarco Bet, Jori Selen, Alessandro Zocca
We consider a model for a queue in which only a fixed number of customers can join. Each customer joins the queue independently at an exponentially distributed time. Assuming f…
A Metropolis-class sampler for targets with non-convex support
John Moriarty, Jure Vogrinc, Alessandro Zocca
We aim to improve upon the exploration of the general-purpose random walk Metropolis algorithm when the target has non-convex support , by reusing proposals…
Temporal starvation in multi-channel CSMA networks: an analytical framework
Alessandro Zocca
In this paper we consider a stochastic model for a frequency-agile CSMA protocol for wireless networks where multiple orthogonal frequency channels are available. Even when the pos…
Tunneling behavior of Ising and Potts models in the low-temperature regime
Francesca R. Nardi, Alessandro Zocca
We consider the ferromagnetic -state Potts model with zero external field in a finite volume and assume that the stochastic evolution of this system is described by a Glauber-ty…
Low-temperature behavior of the multicomponent Widom-Rowlison model on finite square lattices
Alessandro Zocca
We consider the multicomponent Widom-Rowlison with Metropolis dynamics, which describes the evolution of a particle system where different types of particles interact subject t…
Tunneling of the hard-core model on finite triangular lattices
Alessandro Zocca
We consider the hard-core model on finite triangular lattices with Metropolis dynamics. Under suitable conditions on the triangular lattice dimensions, this interacting particle sy…
Hitting times asymptotics for hard-core interactions on grids
Francesca R. Nardi, Alessandro Zocca, Sem C. Borst
We consider the hard-core model with Metropolis transition probabilities on finite grid graphs and investigate the asymptotic behavior of the first hitting time between its two max…
Slow transitions, slow mixing and starvation in dense random-access networks
Alessandro Zocca, Sem C. Borst, Johan S. H. van Leeuwaarden
We consider dense wireless random-access networks, modeled as systems of particles with hard-core interaction. The particles represent the network users that try to become active a…
Delay performance in random-access grid networks
Alessandro Zocca, Sem C. Borst, Johan S. H. van Leeuwaarden +1
We examine the impact of torpid mixing and meta-stability issues on the delay performance in wireless random-access networks. Focusing on regular meshes as prototypical scenarios,…
Mixing Properties of CSMA Networks on Partite Graphs
Alessandro Zocca, Sem C. Borst, Johan S. H. van Leeuwaarden
We consider a stylized stochastic model for a wireless CSMA network. Experimental results in prior studies indicate that the model provides remarkably accurate throughput estimates…