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- Diego Garlaschelli, Maria I. Loffredo
- Physical review letters
- 2004

We address the problem of link reciprocity, the nonrandom presence of two mutual links between pairs of vertices. We propose a new measure of reciprocity that allows the ordering of networksâ€¦ (More)

- Diego Garlaschelli, Guido Caldarelli, Luciano Pietronero
- Nature
- 2003

The structure of ecological communities is usually represented by food webs. In these webs, we describe species by means of vertices connected by links representing the predations. We can thereforeâ€¦ (More)

- Diego Garlaschelli, Maria I. Loffredo
- Physical review letters
- 2004

Among the proposed network models, the hidden variable (or good get richer) one is particularly interesting, even if an explicit empirical test of its hypotheses has not yet been performed on a realâ€¦ (More)

The World Trade Web (WTW), the network defined by the international import/export trade relationships, has been recently shown to display some important topological properties which are tightlyâ€¦ (More)

In order to detect patterns in real networks, randomized graph ensembles that preserve only part of the topology of an observed network are systematically used as fundamental null models. However,â€¦ (More)

- Tiziano Squartini, Francesco Picciolo, Franco Ruzzenenti, Diego Garlaschelli
- Scientific reports
- 2013

In directed networks, reciprocal links have dramatic effects on dynamical processes, network growth, and higher-order structures such as motifs and communities. While the reciprocity of binaryâ€¦ (More)

- Sebastian E. Ahnert, Diego Garlaschelli, T. M. A. Fink, G Caldarelli
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2007

We present an approach to the analysis of weighted networks, by providing a straightforward generalization of any network measure defined on unweighted networks, such as the average degree of theâ€¦ (More)

- Tiziano Squartini, Giorgio Fagiolo, Diego Garlaschelli
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2011

Based on the misleading expectation that weighted network properties always offer a more complete description than purely topological ones, current economic models of the International Trade Networkâ€¦ (More)

- Diego Garlaschelli, Maria I. Loffredo
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2008

The choice of free parameters in network models is subjective, since it depends on what topological properties are being monitored. However, we show that the maximum likelihood (ML) principleâ€¦ (More)

Network topology plays a key role in many phenomena, from the spreading of diseases to that of financial crises. Whenever the whole structure of a network is unknown, one must resort toâ€¦ (More)