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1、CHAPTER12AnOverviewofSocialNetworksandEconomicApplications*{MatthewO.Jackson{WrittenfortheHandbookofSocialEconomicsContents1.Introduction5122.SocialNetworksandNetworkedMarkets5142.1Somebackgroundonnetworkedmarkets5142.1.1Socialnetworksinlabormarkets5142.1
2、.2Othernetworkedmarkets5172.2Socialnetworksinlearninganddiffusion5183.TheStructureofSocialNetworks5213.1Definitionsandgraphterminology5223.2Degreedistributions5233.3Averagedistancesandsmallworlds5263.3.1Clustering5273.3.2Homophily5294.NetworkFormation5324
3、.1Randomnetworks5334.1.1Poissonrandomnetworks5334.1.2Thesmallworldmodel5334.1.3Preferentialattachment5344.1.4Richersequentiallinkformationmodels5354.2Modelsforstatisticalanalysis5354.2.1Exponentialrandomgraphmodelsandpmodels5364.2.2Fittingrandomandstrate
4、gicmodels5404.2.3Communitydetection5404.3Strategicnetworkformation5434.4Mixingrandomandstrategicmodels5495.ModelingtheImpactofNetworks5505.1Diffusion5515.2Learning5515.3Bargainingandtradethroughnetworks560FinancialsupportfromtheNSFundergrantSES–0647867is
5、gratefullyacknowledged.ThankyoutoMatthewElliott,CarlosLever,andYvesZenouforcommentsonearlierdrafts.{DepartmentofEconomics,StanfordUniversity,StanfordCA94305,USAandtheSantaFeInstitute,SantaFeNM87501,USA.{EditedbyJessBenhabib,AlbertoBisin,andMatthewO.Jackso
6、n,forthcoming,ElsevierPress.HandbookofSocialEconomics,Volume1A#2011ElsevierB.V.ISSN0169-7218,DOI:10.1016/S0169-7218(11)01012-4Allrightsreserved.511512MatthewO.Jackson5.4Peerinteractionsandgamesonnetworks5655.5Labormarkets5736.ConcludingRemarks574Reference
7、s574FurtherReadings582AbstractInthischapter,Iprovideanoverviewofresearchonsocialnetworksandtheirroleinshapingbehaviorandeconomicoutcomes.Iincludediscussionofempiricalandtheoreticalanalysesoftheroleofsocialnetworksinmarketsandexchange,learninganddiffusion,
8、andnetworkgames.Ialsoincludesomebackgroundonsocialnetworkcharacteristicsandmeasurements,modelsofnetworkformation,modelsforthestatisticalanalysisofsocialnetworks,aswellascommunitydetection.JELClassificationCodes:D85,
