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- Vito Latora, Massimo Marchiori
- Physical review letters
- 2001

We introduce the concept of efficiency of a network as a measure of how efficiently it exchanges information. By using this simple measure, small-world networks are seen as systems that are both globally and locally efficient. This gives a clear physical meaning to the concept of "small world," and also a precise quantitative analysis of both weighted andâ€¦ (More)

The small-world phenomenon has been already the subject of a huge variety of papers, showing its appeareance in a variety of systems. However, some big holes still remain to be filled, as the commonly adopted mathematical formulation is valid only for topological networks. In this paper we propose a generalization of the theory of small worlds based on twoâ€¦ (More)

- Salvatore Scellato, Mirco Musolesi, Cecilia Mascolo, Vito Latora, Andrew T. Campbell
- Pervasive
- 2011

Accurate and fine-grained prediction of future user location and geographical profile has interesting and promising applications including targeted content service, advertisement dissemination for mobile users, and recreational social networking tools for smart-phones. Existing techniques based on linear and probabilistic models are not able to provideâ€¦ (More)

- Paolo Crucitti, Vito Latora, Massimo Marchiori
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2004

Large but rare cascades triggered by small initial shocks are present in most of the infrastructure networks. Here we present a simple model for cascading failures based on the dynamical redistribution of the flow on the network. We show that the breakdown of a single node is sufficient to collapse the efficiency of the entire system if the node is amongâ€¦ (More)

The North American power grid is one of the most complex technological networks, and its interconnectivity allows both for long-distance power transmission and for the propagation of disturbances. We model the power grid using its actual topology and plausible assumptions about the load and overload of transmission substations. Our results indicate that theâ€¦ (More)

- Federico Battiston, Vincenzo Nicosia, Vito Latora
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2014

Many real-world complex systems consist of a set of elementary units connected by relationships of different kinds. All such systems are better described in terms of multiplex networks, where the links at each layer represent a different type of interaction between the same set of nodes rather than in terms of (single-layer) networks. In this paper weâ€¦ (More)

- Jiuqiang Tang, Salvatore Scellato, Mirco Musolesi, Celia Mascolo, Vito Latora
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2010

Connections in complex networks are inherently fluctuating over time and exhibit more dimensionality than analysis based on standard static graph measures can capture. Here, we introduce the concepts of temporal paths and distance in time-varying graphs. We define as temporal small world a time-varying graph in which the links are highly clustered in time,â€¦ (More)

Online Social Networks (OSNs) are increasingly becoming one of the key media of communication over the Internet. The potential of these services as the basis to gather statistics and exploit information about user behavior is appealing and, as a consequence, the number of applications developed for these purposes has been soaring. At the same time, usersâ€¦ (More)

The study of influential members of human networks is an important research question in social network analysis. However, the current state-of-the-art is based on static or <i>aggregated</i> representation of the network topology. We argue that dynamically evolving network topologies are inherent in many systems, including real online social andâ€¦ (More)

The application of the network approach to the urban case poses several questions in terms of how to deal with metric distances, what kind of graph representation to use, what kind of measures to investigate, how to deepen the correlation between measures of the structure of the network and measures of the dynamics on the network, what are the possibleâ€¦ (More)