Topics in the Economic Theory of Networks

网络经济理论主题

基本信息

  • 批准号:
    0317220
  • 负责人:
  • 金额:
    $ 20.89万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Continuing Grant
  • 财政年份:
    2003
  • 资助国家:
    美国
  • 起止时间:
    2003-08-15 至 2007-07-31
  • 项目状态:
    已结题

项目摘要

This project advances the economic theory of networks. Research in many other disciplines documents the importance of networks for economic activity. Yet, economists have only begun to develop theories of network interactions. This research will provide economists a new way of thinking about who does business with whom and why. It thus promises to change both economic theory and policy. The first part of the proposal builds a network model of industry, where several manufacturers deal with several suppliers, and vice versa. The project takes a new look at a central policy question and theoretical puzzle -- how do vertical mergers affect economic welfare? It has long been argued - by both theorists and regulators - that vertical merger of two firms can lead to better internal coordination and investments. The project challenges this insight by considering the impact of merger on all investments, not just those internal to the merger. The project shows firms can strategically compete in these investment and demonstrates how a merged firm can manipulate its investments to increase its profits, but at a loss to other firms. The results should change the way theorists view industrial competition and inform how policy makers evaluate vertical mergers. The second part of this project studies social networks and the search for new technologies and information. Many studies have argued that communication and learning from others is important for economic activity and innovation. For example, before purchasing a new product or investing in a new technology, people inquire into the experiences of friends, neighbors, and colleagues. The project models this process. It introduces a new model where individuals experiment, then communicate their results to friends and colleagues. The project asks: how does the pattern of communication links determine the pattern of search and experimentation? Do people search themselves or rely on others? How do new links - links between communities or firms, for example - affect experimentation, search patterns and welfare? The answers to these questions should change the way people design institutions and policies to increase communication between different parts of the economy and society.
该项目推进了网络经济理论。许多其他学科的研究证明了网络对经济活动的重要性。然而,经济学家才刚刚开始发展网络互动的理论。这项研究将为经济学家提供一种新的思路,来思考谁与谁做生意以及为什么做生意。因此,它有望改变经济理论和政策。该提案的第一部分建立了一个工业网络模型,其中几个制造商与几个供应商打交道,反之亦然。该项目以新的眼光看待一个中心的政策问题和理论难题-纵向合并如何影响经济福利?长期以来,理论家和监管机构都认为,两家公司的纵向合并可以改善内部协调和投资。该项目通过考虑合并对所有投资的影响,而不仅仅是合并内部的投资,来挑战这一观点。该项目表明,公司可以在这些投资中进行战略竞争,并展示了合并后的公司如何操纵其投资以增加利润,但对其他公司造成损失。研究结果应该改变理论家看待产业竞争的方式,并告知政策制定者如何评估纵向合并。该项目的第二部分研究社交网络和寻找新技术和信息。许多研究认为,交流和向他人学习对经济活动和创新很重要。例如,在购买新产品或投资新技术之前,人们会询问朋友、邻居和同事的经验。该项目模拟了这一过程。它引入了一种新的模式,个人实验,然后将他们的结果传达给朋友和同事。该项目提出的问题是:沟通联系的模式如何决定搜索和实验的模式?人们是依靠自己还是依靠别人?新的联系--例如社区或公司之间的联系--如何影响实验、搜索模式和福利?这些问题的答案应该改变人们设计机构和政策的方式,以增加经济和社会不同部分之间的沟通。

项目成果

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Rachel Kranton其他文献

Rachel Kranton的其他文献

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{{ truncateString('Rachel Kranton', 18)}}的其他基金

ICES: Small: Networks, Public Goods, and Social Interactions: At the Edge of Analytics and Complexity
ICES:小型:网络、公共物品和社交互动:处于分析和复杂性的边缘
  • 批准号:
    1101673
  • 财政年份:
    2011
  • 资助金额:
    $ 20.89万
  • 项目类别:
    Standard Grant
Collaborative Research: Innovation in Social Networks
合作研究:社交网络的创新
  • 批准号:
    1019237
  • 财政年份:
    2010
  • 资助金额:
    $ 20.89万
  • 项目类别:
    Standard Grant
Powre: Collaborative Research: Developing a Theory of Buyer-Seller Networks
Powre:协作研究:发展买家-卖家网络理论
  • 批准号:
    9806063
  • 财政年份:
    1998
  • 资助金额:
    $ 20.89万
  • 项目类别:
    Standard Grant

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