Zobrazeno 1 - 10
of 60
pro vyhledávání: '"Palombi, Filippo"'
Publikováno v:
The European Physical Journal B (2020) 93:194
We study a variant of the cyclic Lotka-Volterra model with three-agent interactions. Inspired by a multiplayer variation of the Rock-Paper-Scissors game, the model describes an ideal ecosystem in which cyclic competition among three species develops
Externí odkaz:
http://arxiv.org/abs/1905.05591
Publikováno v:
Phys. Rev. E 96, 062311 (2017)
We investigate large-scale effects induced by external fields, phenomenologically interpreted as mass media, in multiagent models evolving with the microscopic dynamics of the binary naming game. In particular, we show that a single external field, b
Externí odkaz:
http://arxiv.org/abs/1706.07092
Autor:
Palombi, Filippo, Toti, Simona
Publikováno v:
Games, 8(1), 12 (2017)
The Naming Game is an agent-based model where individuals communicate to name an initially unnamed object. On a large class of networks continual pairwise interactions lead the system to an ultimate consensus state, in which agents converge on a glob
Externí odkaz:
http://arxiv.org/abs/1610.08672
Autor:
Palombi, Filippo, Toti, Simona
In proportional elections with open lists the excess of preferences received by candidates with respect to the list average is known to follow a universal lognormal distribution. We show that lognormality is broken provided preferences are conditione
Externí odkaz:
http://arxiv.org/abs/1601.07060
Autor:
Palombi, Filippo, Toti, Simona
Publikováno v:
Int. J. Mod. Phys. C, Vol. 26, No. 12 (2015) 1550139
Approximate weak solutions of the Fokker-Planck equation can represent a useful tool to analyze the equilibrium fluctuations of birth-death systems, as they provide a quantitative knowledge lying in between numerical simulations and exact analytic ar
Externí odkaz:
http://arxiv.org/abs/1407.7404
Autor:
Palombi, Filippo, Toti, Simona
Publikováno v:
Journal of Statistical Physics, Vol. 156, Issue 2 (2014), pp. 336-367
The stochastic dynamics of the multi-state voter model is investigated on a class of complex networks made of non-overlapping cliques, each hosting a political candidate and interacting with the others via Erd\H{o}s-R\'enyi links. Numerical simulatio
Externí odkaz:
http://arxiv.org/abs/1309.0396
Autor:
Mariano, Angelo, D’Amato, Giulio, Ambrosino, Fiorenzo, Aprea, Giuseppe, Buonocore, Francesco, Celino, Massimo, Colavincenzo, Antonio, Fina, Marco, Funel, Agostino, Giusepponi, Simone, Guarnieri, Guido, Palombi, Filippo, Pierattini, Samuele, Ponti, Giovanni, Santomauro, Giuseppe, Bracco, Giovanni, Migliori, Silvio
Publikováno v:
In Future Generation Computer Systems May 2019 94:920-928
Autor:
Palombi, Filippo, Toti, Simona
Publikováno v:
Journal of Multivariate Analysis, Vol. 122 (November 2013), pp. 355-376
We present arguments in favour of the inequalities $var(X_n^2|X \in B_v(\rho)) \le 2\lambda_n E[X_n^2|X \in B_v(\rho)]$, where $X \sim N_v(0,\Lambda)$ is a normal vector in $v\ge 1$ dimensions, with zero mean and covariance matrix $\Lambda = \diag(\l
Externí odkaz:
http://arxiv.org/abs/1211.1614
Autor:
Palombi, Filippo, Toti, Simona
Publikováno v:
Journal of Computational and Applied Mathematics 364C(2020) 112340
In this paper we propose a perturbative method for the reconstruction of the covariance matrix of a multinormal distribution, under the assumption that the only available information amounts to the covariance matrix of a spherically truncated counter
Externí odkaz:
http://arxiv.org/abs/1207.1256
Publikováno v:
J. Prob. Stat. Vol. 2017 (2017), Art. ID 6579537, 24 pages
In this paper we relate the matrix $S_B$ of the second moments of a spherically truncated normal multivariate to its full covariance matrix $\Sigma$ and present an algorithm to invert the relation and reconstruct $\Sigma$ from $S_B$. While the eigenv
Externí odkaz:
http://arxiv.org/abs/1202.1838