Using friends as sensors to detect global-scale contagious outbreaks.
Using friends as sensors to detect global-scale contagious outbreaks.
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DOI:
10.1371/journal.pone.0092413
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发表时间:
2014
期刊:
影响因子:
3.7
通讯作者:
Fowler JH
中科院分区:
文献类型:
--
作者:
Garcia-Herranz M;Moro E;Cebrian M;Christakis NA;Fowler JH
Recent research has focused on the monitoring of global–scale online data for improved detection of epidemics, mood patterns, movements in the stock market political revolutions, box-office revenues, consumer behaviour and many other important phenomena. However, privacy considerations and the sheer scale of data available online are quickly making global monitoring infeasible, and existing methods do not take full advantage of local network structure to identify key nodes for monitoring. Here, we develop a model of the contagious spread of information in a global-scale, publicly-articulated social network and show that a simple method can yield not just early detection, but advance warning of contagious outbreaks. In this method, we randomly choose a small fraction of nodes in the network and then we randomly choose a friend of each node to include in a group for local monitoring. Using six months of data from most of the full Twittersphere, we show that this friend group is more central in the network and it helps us to detect viral outbreaks of the use of novel hashtags about 7 days earlier than we could with an equal-sized randomly chosen group. Moreover, the method actually works better than expected due to network structure alone because highly central actors are both more active and exhibit increased diversity in the information they transmit to others. These results suggest that local monitoring is not just more efficient, but also more effective, and it may be applied to monitor contagious processes in global–scale networks.
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DOI:
10.1126/science.1167742
发表时间:
2009-02-06
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Lazer D;Pentland A;Adamic L;Aral S;Barabasi AL;Brewer D;Christakis N;Contractor N;Fowler J;Gutmann M;Jebara T;King G;Macy M;Roy D;Van Alstyne M
通讯作者:
Van Alstyne M
影响因子:
4.4
作者:
FELD, SL
通讯作者:
FELD, SL
影响因子:
64.8
作者:
Bond, Robert M.;Fariss, Christopher J.;Jones, Jason J.;Kramer, Adamd. I.;Marlow, Cameron;Settle, Jaime E.;Fowler, James H.
通讯作者:
Fowler, James H.
影响因子:
56.9
作者:
Aral, Sinan;Walker, Dylan
通讯作者:
Walker, Dylan
DOI:
10.1098/rspa.1927.0118
发表时间:
1927-08-01
期刊:
PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-CONTAINING PAPERS OF A MATHEMATICAL AND PHYSICAL CHARACTER
影响因子:
--
作者:
Kermack, WO;McKendrick, AG
通讯作者:
McKendrick, AG