55 citations · 520 across the 34 of their papers we have counts for
10 papers · 1 filter
Higher order assortativity for directed weighted networks and Markov chains
Alberto Arcagni, Roy Cerqueti, Rosanna Grassi
This paper proposes a new class of assortativity measures for weighted and directed networks. We extend the classical Newman's degree-degree assortativity by considering nodes' att…
Rational expectations as a tool for predicting failure of weighted k-out-of-n reliability systems
Jorgen Vitting Andersen, Roy Cerqueti, Jessica Riccioni
Here we introduce the idea of using rational expectations, a core concept in economics and finance, as a tool to predict the optimal failure time for a wide class of weighted k-out…
Tsallis entropy for cross-shareholding network configurations
Roy Cerqueti, Giulia Rotundo, Marcel Ausloos
In this work, we develop the Tsallis entropy approach for examining the cross-shareholding network of companies traded on the Italian stock market. In such a network, the nodes rep…
Influence measures in subnetworks using vertex centrality
Roy Cerqueti, Gian Paolo Clemente, Rosanna Grassi
This work deals with the issue of assessing the influence of a node in the entire network and in the subnetwork to which it belongs as well, adapting the classical idea of vertex c…
Stratified communities in complex business networks
Roy Cerqueti, Gian Paolo Clemente, Rosanna Grassi
This paper presents a new definition of the community structure of a network, which takes also into account how communities are stratified. In particular, we extend the standard co…
Systemic risk assessment through high order clustering coefficient
Roy Cerqueti, Gian Paolo Clemente, Rosanna Grassi
In this article we propose a novel measure of systemic risk in the context of financial networks. To this aim, we provide a definition of systemic risk which is based on the struct…
Religion-based Urbanization Process in Italy: Statistical Evidence from Demographic and Economic Data
Marcel Ausloos, Roy Cerqueti
This paper analyzes some economic and demographic features of Italians living in cities containing a Saint name in their appellation (hagiotoponyms). Demographic data come from the…
Socio-economical analysis of Italy: The case of hagiotoponym cities
Roy Cerqueti, Marcel Ausloos
This paper pursues the scopes of joining the economical characteristics of Italian cities with a relevant sociological aspect: the cult of the catholic Saints. Indeed, more than in…
Evidence of Economic Regularities and Disparities of Italian Regions From Aggregated Tax Income Size Data
Roy Cerqueti, Marcel Ausloos
This paper discusses the size distribution, - in economic terms - of the Italian municipalities over the period 2007-2011. Yearly data are rather well fitted by a modified Lavalett…
Benford's law predicted digit distribution of aggregated income taxes: the surprising conformity of Italian cities and regions
Tariq Ahmad Mir, Marcel Ausloos, Roy Cerqueti
The yearly aggregated tax income data of all, more than 8000, Italian municipalities are analyzed for a period of five years, from 2007 to 2011, to search for conformity or not wit…