In search of efficient network structures: The needle in the haystack
The modelling of networks formation has recently became the object of an increasing interest in economics. One of the important issues raised in this literature is the one of networks efficiency. Nevertheless, for non trivial payoff functions, searching for efficient network structures turns out to be a very difficult analytical problem as well as a huge computational task, even for a relatively small number of agents. In this paper, we explore the possibility of using genetic algorithms (GA) techniques for identifying efficient network structures, because the GA have proved their power as a tool for solving complex optimization problems. The robustness of this method in predicting optimal network structures is tested on two simple stylized models introduced by Jackson and Wolinski (1996), for which the efficient networks are known over the whole state space of parameters values. We also show that this approach can provide new exploratory results for the linear-spatialized connections model of Johnson and Gilles (2000), in which the efficient allocation of bilateral connections is driven by contradictory forces that push either for a centralized structure around a coordinating agent, or for only locally and evenly distributed connections.
|Date of creation:||2007|
|Date of revision:|
|Contact details of provider:|| Postal: Avenue Léon Duguit, 33608 Pessac Cedex|
Phone: +33 (0)18.104.22.168.75
Fax: +33 (0)22.214.171.124.47
Web page: http://gretha.u-bordeaux4.fr/
More information through EDIRC
References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- Matthew O. Jackson, 2003.
"A survey of models of network formation: Stability and efficiency,"
1161, California Institute of Technology, Division of the Humanities and Social Sciences.
- Matthew O. Jackson, 2003. "A Survey of Models of Network Formation: Stability and Efficiency," Game Theory and Information 0303011, EconWPA.
- Murat Yildizoglu & Nicolas Carayol & Pascale Roux, 2008.
"Inefficiencies in a model of spatial networks formation with positive externalities,"
- Carayol, Nicolas & Roux, Pascale & YIldIzoGlu, Murat, 2008. "Inefficiencies in a model of spatial networks formation with positive externalities," Journal of Economic Behavior & Organization, Elsevier, vol. 67(2), pages 495-511, August.
- Murat Yildizoglu & Nicolas Carayol & Pascale Roux, 2008. "Inefficiencies in a model of spatial networks formation with positive externalities," Post-Print hal-00401137, HAL.
- Jackson, Matthew O. & Wolinsky, Asher, 1996.
"A Strategic Model of Social and Economic Networks,"
Journal of Economic Theory,
Elsevier, vol. 71(1), pages 44-74, October.
- Matthew O. Jackson & Asher Wolinsky, 1994. "A Strategic Model of Social and Economic Networks," Discussion Papers 1098, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
- Matthew O. Jackson & Asher Wolinsky, 1995. "A Strategic Model of Social and Economic Networks," Discussion Papers 1098R, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
- Pascale Roux & Nicolas Carayol, 2009.
"Knowledge flows and the geography of networks. A strategic model of small world formation,"
- Carayol, Nicolas & Roux, Pascale, 2009. "Knowledge flows and the geography of networks: A strategic model of small world formation," Journal of Economic Behavior & Organization, Elsevier, vol. 71(2), pages 414-427, August.
- Nicolas Carayol & Pascale Roux, 2006. "Knowledge flows and the geography of networks. A strategic model of small worlds formation," Working Papers of BETA 2006-16, Bureau d'Economie Théorique et Appliquée, UDS, Strasbourg.
- Nicolas Carayol & Pascale Roux, 2009. "Knowledge Flows and the Geography of Networks. A Strategic Model of Small World Formation," Post-Print hal-00674100, HAL.
- Nicolas Carayol & Pascale Roux, 2004. "Behavioral Foundations And Equilibrium Notions For Social Network Formation Processes," Advances in Complex Systems (ACS), World Scientific Publishing Co. Pte. Ltd., vol. 7(01), pages 77-92.
When requesting a correction, please mention this item's handle: RePEc:grt:wpegrt:2007-11. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Emmanuel Petit)
If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.
If references are entirely missing, you can add them using this form.
If the full references list an item that is present in RePEc, but the system did not link to it, you can help with this form.
If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your profile, as there may be some citations waiting for confirmation.
Please note that corrections may take a couple of weeks to filter through the various RePEc services.