Search Results - subject:"Random Graph"

Characteristics of the Polish stock market correlations

Gałązka, Marek - In: International review of financial analysis 20 (2011) 1, pp. 1-5

Persistent link: https://www.econbiz.de/10009295932

A latent process model for time series of attributed random graphs

Lee, N.; Priebe, C. - In: Statistical Inference for Stochastic Processes 14 (2011) 3, pp. 231-253

Persistent link: https://www.econbiz.de/10009325264

Measuring the network robustness by Monte Carlo estimation of shortest path length distribution

Morohosi, Hozumi - In: Mathematics and Computers in Simulation (MATCOM) 81 (2010) 3, pp. 551-559

Two kinds of robustness measure for networks are introduced and applied to the road network systems in Japan. One is on the connectivity of randomly chosen pair of vertices, another is on the shortest path length between pair of connected vertices. We devise Monte Carlo methods for the...

Persistent link: https://www.econbiz.de/10010749370

A scale-free network with limiting on vertices

Tang, Lian; Wang, Bin - In: Physica A: Statistical Mechanics and its Applications 389 (2010) 10, pp. 2147-2154

We propose and analyze a random graph model which explains a phenomena in the economic company network in which company … may not expand its business at some time due to the limiting of money and capacity. The random graph process is defined as …. We prove that the degree distribution P(k) of this random graph process satisfies P(k)∝C1k−3−α01−α0 if α(⋅) is a constant …

Persistent link: https://www.econbiz.de/10011061860

On the distributions of Laplacian eigenvalues versus node degrees in complex networks

Zhan, Choujun; Chen, Guanrong; Yeung, Lam F. - In: Physica A: Statistical Mechanics and its Applications 389 (2010) 8, pp. 1779-1788

-guided extensive numerical simulations, for four typical complex network models, namely, the ER random-graph networks, WS and NW small …

Persistent link: https://www.econbiz.de/10010874443

Social Networks

De Martí, Joan; Zenou, Yves - C.E.P.R. Discussion Papers - 2009

We survey the literature on social networks by putting together the economics, sociological and physics/applied mathematics approaches, showing their similarities and differences. We expose, in particular, the two main ways of modeling network formation. While the physics/applied mathematics...

Persistent link: https://www.econbiz.de/10008557014

Modeling wireless sensor networks using random graph theory

Ding, Li; Guan, Zhi-Hong - In: Physica A: Statistical Mechanics and its Applications 387 (2008) 12, pp. 3008-3016

of WSNs on a two-dimensional plane using site percolation model, a kind of random graph in which edges are formed only …

Persistent link: https://www.econbiz.de/10010590982

The role of degree-weighted couplings in the synchronous onset of Kuramoto oscillator networks

Li, Xiang - In: Physica A: Statistical Mechanics and its Applications 387 (2008) 26, pp. 6624-6630

This paper investigates the role of asymmetrical degree-dependent weighted couplings in synchronization of a network of Kuramoto oscillators, where the conditions of coupling criticality for the onset of phase synchronization in degree-weighted complex networks are arrived at. The numerical...

Persistent link: https://www.econbiz.de/10011057385

Preferential survival in models of complex ad hoc networks

Kong, Joseph S.; Roychowdhury, Vwani P. - In: Physica A: Statistical Mechanics and its Applications 387 (2008) 13, pp. 3335-3347

There has been a rich interplay in recent years between (i) empirical investigations of real-world dynamic networks, (ii) analytical modeling of the microscopic mechanisms that drive the emergence of such networks, and (iii) harnessing of these mechanisms to either manipulate existing networks,...

Persistent link: https://www.econbiz.de/10011057651

The π sequence as a complex network

Lui, Kenneth W.K.; So, H.C.; Chen, Guanrong - In: Physica A: Statistical Mechanics and its Applications 387 (2008) 22, pp. 5653-5661

examined in detail and its properties are contrasted with the Erdos–Renyi (ER) random graph model. Based on the observation … that there are more nodes with even degrees than the adjacent odd counterparts in the constructed network, a new random … graph model named Random Eulerian (RE) model and its extension are finally proposed and analyzed. …

Persistent link: https://www.econbiz.de/10011058276