Physics – Physics and Society
Scientific paper
2009-05-05
Physics
Physics and Society
Scientific paper
We analyze the anonymous communication patterns of 2.5 million customers of a Belgian mobile phone operator. Grouping customers by billing address, we build a social network of cities, that consists of communications between 571 cities in Belgium. We show that inter-city communication intensity is characterized by a gravity model: the communication intensity between two cities is proportional to the product of their sizes divided by the square of their distance.
Blondel Vincent D.
Calabrese Francesco
Krings Gautier
Ratti Claudia
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