dorsal/arxiv
View SchemaAnalysis of a large-scale weighted network of one-to-one human communication
| Authors | Jukka-Pekka Onnela, Jari Saramaki, Jorkki Hyvonen, Gabor Szabo, M. Argollo de Menezes, Kimmo Kaski, Albert-Laszlo Barabasi, Janos Kertesz |
|---|---|
| Categories | |
| ArXiv ID | physics/0702158 |
| URL | https://arxiv.org/abs/physics/0702158 |
| DOI | 10.1088/1367-2630/9/6/179 |
Abstract
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 two weights on each edge to reflect the strength of social interaction, which are the aggregate call duration and the cumulative number of calls placed between the individuals over a period of 18 weeks. We present a detailed analysis of this weighted network by examining its degree, strength, and weight distributions, as well as its topological assortativity and weighted assortativity, clustering and weighted clustering, together with correlations between these quantities. We give an account of motif intensity and coherence distributions and compare them to a randomized reference system. We also use the concept of link overlap to measure the number of common neighbors any two adjacent nodes have, which serves as a useful local measure for identifying the interconnectedness of communities. We report a positive correlation between the overlap and weight of a link, thus providing strong quantitative evidence for the weak ties hypothesis, a central concept in social network analysis. The percolation properties of the network are found to depend on the type and order of removed links, and they can help understand how the local structure of the network manifests itself at the global level. We hope that our results will contribute to modeling weighted large-scale social networks, and believe that the systematic approach followed here can be adopted to study other weighted networks.
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"abstract": "We construct a connected network of 3.9 million nodes from mobile phone call\nrecords, which can be regarded as a proxy for the underlying human\ncommunication network at the societal level. We assign two weights on each edge\nto reflect the strength of social interaction, which are the aggregate call\nduration and the cumulative number of calls placed between the individuals over\na period of 18 weeks. We present a detailed analysis of this weighted network\nby examining its degree, strength, and weight distributions, as well as its\ntopological assortativity and weighted assortativity, clustering and weighted\nclustering, together with correlations between these quantities. We give an\naccount of motif intensity and coherence distributions and compare them to a\nrandomized reference system. We also use the concept of link overlap to measure\nthe number of common neighbors any two adjacent nodes have, which serves as a\nuseful local measure for identifying the interconnectedness of communities. We\nreport a positive correlation between the overlap and weight of a link, thus\nproviding strong quantitative evidence for the weak ties hypothesis, a central\nconcept in social network analysis. The percolation properties of the network\nare found to depend on the type and order of removed links, and they can help\nunderstand how the local structure of the network manifests itself at the\nglobal level. We hope that our results will contribute to modeling weighted\nlarge-scale social networks, and believe that the systematic approach followed\nhere can be adopted to study other weighted networks.",
"arxiv_id": "physics/0702158",
"authors": [
"Jukka-Pekka Onnela",
"Jari Saramaki",
"Jorkki Hyvonen",
"Gabor Szabo",
"M. Argollo de Menezes",
"Kimmo Kaski",
"Albert-Laszlo Barabasi",
"Janos Kertesz"
],
"categories": [
"physics.soc-ph"
],
"doi": "10.1088/1367-2630/9/6/179",
"title": "Analysis of a large-scale weighted network of one-to-one human communication",
"url": "https://arxiv.org/abs/physics/0702158"
},
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