Community Structure in Time-Dependent, Multiscale, and Multiplex Networks (2009)
Mucha, Peter J., Richardson, Thomas, Macon, Kevin, Porter, Mason A., Onnela, Jukka-Pekka
During the last decade, the science of networks has grown into an enormous interdisciplinary endeavor, with methods and applications drawn from across the natural, social, and information sciences....
Competition for Popularity in Catalog Networks (2009)
Beguerisse-Diaz, Mariano, Porter, Mason A., Onnela, Jukka-Pekka
We develop a dynamical model for rewiring and attachment in bipartite networks in which edges are added between nodes that belong to fixed-size catalogs. We motivate this model with an empirical...
Communities in Networks (2009)
Porter, Mason A., Onnela, Jukka-Pekka, Mucha, Peter J.
We survey some of the concepts, methods, and applications of community detection, which has become an increasingly important area of network science. To help ease newcomers into the field, we provide...
Characterizing Motifs in Weighted Complex Networks (2008)
Jari Saramäki, Jukka-pekka Onnela, Janos Kertész, Kimmo Kaski
The local structure of unweighted complex networks can be characterized by the occurrence frequencies of subgraphs in the network. Frequently occurring subgraphs, motifs, have been related to the...
Master-equation analysis of accelerating networks (2008)
Smith, David M. D., Onnela, Jukka-Pekka, Jones, Nick S.
In many real-world networks, the rates of node and link addition are time dependent. This observation motivates the definition of accelerating networks. There has been relatively little investigation...
Social networks Traditional approach: (2008)
Social network paradigm in the social sciences: Social life consists of the flow and exchange of norms, values, ideas, and other social and cultural resources channelled through the social network...
Sampling bias in systems with structural heterogeneity and limited internal diffusion (2008)
Onnela, Jukka-Pekka, Johnson, Neil F., Gourley, Sean, Reinert, Gesine, Spagat, Michael
Complex systems research is becomingly increasingly data-driven, particularly in the social and biological domains. Many of the systems from which sample data are collected feature structural...
Toivonen, Riitta, Kovanen, Lauri, Kivelä, Mikko, Onnela, Jukka-Pekka, Saramäki, Jari, Kaski, Kimmo
This paper reviews, classifies and compares recent models for social networks that have mainly been published within the physics-oriented complex networks literature. The models fall into two...
OVERVIEW OF INVITED TALKS AND SESSIONS (2008)
Huge Network, Janos Kertesz, Jukka-pekka Onnela, Jari Saramaki, Gabor Szabo, Albert-laszlo Barabasi, ...
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Link-space formalism for network analysis (2007)
Smith, David M. D., Lee, Chiu Fan, Onnela, Jukka-Pekka, Johnson, Neil F.
We introduce the link-space formalism for analyzing network models with degree-degree correlations. The formalism is based on a statistical description of the fraction of links l_{i,j} connecting...
Spectral and network methods in the analysis of correlation matrices of stock returns (2007)
Heimo, Tapio, Saramaki, Jari, Onnela, Jukka-Pekka, Kaski, Kimmo
Correlation matrices inferred from stock return time series contain information on the behaviour of the market, especially on clusters of highly correlating stocks. Here we study a subset of New York...
Analysis of a large-scale weighted network of one-to-one human communication (2007)
Onnela, Jukka-Pekka, Saramaki, Jari, Hyvonen, Jorkki, Szabo, Gabor, De Menezes, M. Argollo, Kaski, Kimmo, ...
We construct a connected network of 3.9 million nodes from mobile phone call records, which can be regarded as a proxy for the underlying human communication network at the societal level. We assign...
Link-Space and Network Analysis (2007)
Smith, David M. D., Lee, Chiu Fan, Johnson, Neil F., Onnela, Jukka-Pekka
Many networks contain correlations and often conventional analysis is incapable of incorporating this often essential feature. In arXiv:0708.2176, we introduced the link-space formalism for analysing...
Smith, David M. D., Onnela, Jukka-Pekka, Johnson, Neil F.
Evolving out-of-equilibrium networks have been under intense scrutiny recently. In many real-world settings the number of links added per new node is not constant but depends on the time at which the...
Network automata and the functional dynamic network framework (2007)
Smith, David M. D., Onnela, Jukka-Pekka, Lee, Chiu Fan, Fricker, Mark, Johnson, Neil F.
We introduce and define Network Automata, a generalization of Cellular Automata, which relates the topological evolution of a network to its structure. This framework is capable of replicating many...
Jukka-pekka Onnela, Jari Saramäki, Jörkki Hyvönen, Gábor Szabó, Kimmo Kaski, ...
open–access journal for physics
Complex Networks in the Study of Financial and Social Systems (2006)
Complex systems consist of a large number of interacting elements, giving rise to the emergence of organisation without any external organising principle being applied. Consequently, decomposing the...
Bias in epidemiological studies of conflict mortality
Neil F. Johnson, Michael Spagat, Sean Gourley, Jukka-Pekka Onnela, Gesine Reinert
Cluster sampling has recently been used to estimate the mortality in various conflicts around the world. The Burnham et al. (2006) study on Iraq employs a new variant of this cluster sampling...