Threshold Learning Dynamics in Social Networks

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Show simple item record GONZÁLEZ-AVELLA, Juan Carlos EGUÍLUZ, Victor M. MARSILI, Matteo VEGA-REDONDO, Fernando SAN MIGUEL, Maxi 2012-04-18T09:59:41Z 2012-04-18T09:59:41Z 2011
dc.identifier.citation PLoS ONE, 2011, 6, 5, e20207 en
dc.identifier.issn 1932-6203
dc.description Received: January 10, 2011; Accepted: April 13, 2011; Published: May 27, 2011 en
dc.description.abstract Social learning is defined as the ability of a population to aggregate information, a process which must crucially depend on the mechanisms of social interaction. Consumers choosing which product to buy, or voters deciding which option to take with respect to an important issue, typically confront external signals to the information gathered from their contacts. Economic models typically predict that correct social learning occurs in large populations unless some individuals display unbounded influence. We challenge this conclusion by showing that an intuitive threshold process of individual adjustment does not always lead to such social learning. We find, specifically, that three generic regimes exist separated by sharp discontinuous transitions. And only in one of them, where the threshold is within a suitable intermediate range, the population learns the correct information. In the other two, where the threshold is either too high or too low, the system either freezes or enters into persistent flux, respectively. These regimes are generally observed in different social networks (both complex or regular), but limited interaction is found to promote correct learning by enlarging the parameter region where it occurs. en
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartof PLoS ONE en
dc.rights info:eu-repo/semantics/openAccess
dc.title Threshold Learning Dynamics in Social Networks en
dc.type Article en
dc.identifier.doi 10.1371/journal.pone.0020207
dc.neeo.contributor GONZÁLEZ-AVELLA|Juan Carlos|aut|
dc.neeo.contributor EGUÍLUZ|Victor M.|aut|
dc.neeo.contributor MARSILI|Matteo|aut|
dc.neeo.contributor VEGA-REDONDO|Fernando|aut|EUI70011
dc.neeo.contributor SAN MIGUEL|Maxi|aut|
dc.identifier.volume 6 en
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