The Economics of Small Worlds

Jackson, Matthew O.; Rogers, Brian W.

doi:10.1162/1542476054473440

Cited by 58 publications

(81 citation statements)

References 8 publications

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“…Jackson, Rodriguez-Barraquer and Tan (2009) find that a theoretical model of favor exchange leads to specific predictions about support levels within a network, but does not 23 For more discussion of potential sources of clustering, see Watts (1999), Jackson and Rogers (2005), and Carayol and Roux (2003).…”

Section: Clusteringmentioning

confidence: 99%

“…Thus, a strategic formation model, with quite natural assumptions about costs and benefits can explain why we might expect small world network phenomena. This point appears in various forms in Johnson and Gilles (2000), Carayol and Roux (2003) and Jackson and Rogers (2005). Thus strategic models of network formation are complementary to random-graph and statistical models of network formation, not only in their methods and approach, and the settings to which they might apply, but also in the types of insights that they provide into which network structures should emerge and why.…”

Section: Strategic Network Formationmentioning

confidence: 99%

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An Overview of Social Networks and Economic Applications

Jackson¹

2011

Handbook of Social Economics

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215

147

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In this chapter I provide an overview of research on social networks and their role in shaping behavior and economic outcomes. I include discussion of empirical and theoretical analyses of the role of social networks in markets and exchange, learning and diffusion, and network games. I also include some background on social network characteristics and measurements, models of network formation, models for the statistical analysis of social networks, as well as community detection.

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Section: Clusteringmentioning

confidence: 99%

Section: Strategic Network Formationmentioning

confidence: 99%

An Overview of Social Networks and Economic Applications

Jackson¹

2011

Handbook of Social Economics

Self Cite

215

147

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“…In the …gure above, it is easy to verify that the given network is pairwise stable when c < :04, 1 < C < 4:5, = :95, and where the …ve agents who are completely connected to each other lie on the same island. While this example is suggestive, it is easy to see that these properties hold more broadly (e.g., see Jackson and Rogers (2005)). …”

Section: The Economics Of Small Worldsmentioning

confidence: 83%

“…50 These ideas are illustrated in the following …gure. This is a variation on the connections model called the "islands model" by Jackson and Rogers (2005). In that model, agents are located on separate islands (which might be geographic, professional, or relate to some other characteristics).…”

Section: The Economics Of Small Worldsmentioning

confidence: 99%

The Economics of Social Networks

Jackson¹

Advances in Economics and Econometrics

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The science of social networks is a central …eld of sociological study, a major application of random graph theory, and an emerging area of study by economists, statistical physicists and computer scientists. While these literatures are (slowly) becoming aware of each other, and on occasion drawing from one another, they are still largely distinct in their methods, interests, and goals. Here, my aim is to provide some perspective on the research from these literatures, with a focus on the formal modeling of social networks and the two major types of models: those based on random graphs and those based on game theoretic reasoning. I highlight some of the strengths, weaknesses, and potential synergies between these two network modeling approaches. JEL Classi…cation Numbers: A14, C71, C72

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“…The de…nition of strong stability of Dutta and Mutuswami considers a deviation to be valid only if all members of a deviating coalition are strictly better o¤, while the de…nition of Jackson and van den Nouweland (2005) is slightly stronger by allowing for a deviation to be valid if some members are strictly better o¤ and others are weakly better o¤. 13 The weaker de…nition has sense when transfers among players are not possible.…”

Section: De…nitionmentioning

confidence: 99%

Stable and efficient coalitional networks

et al. 2012

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We develop a theoretical framework that allows us to study which bilateral links and coalition structures are going to emerge at equilibrium. We define the notion of coalitional network to represent a network and a coalition structure, where the network specifies the nature of the relationship each individual has with her coalition members and with individuals outside her coalition. To predict the coalitional networks that are going to emerge at equilibrium we propose the concepts of strong stability and of contractual stability. Contractual stability imposes that any change made to the coalitional network needs the consent of both the deviating players and their original coalition partners. Requiring the consent of coalition members under the simple majority or unanimity decision rule may help to reconcile stability and efficiency. Moreover, this new framework can provide in-sights that one cannot obtain if coalition formation and network formation are tackled separately and independently.

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The Economics of Small Worlds

Cited by 58 publications

References 8 publications

An Overview of Social Networks and Economic Applications

An Overview of Social Networks and Economic Applications

The Economics of Social Networks

Stable and efficient coalitional networks

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