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Decentralised exchange, out-of-equilibrium dynamics and convergence to efficiency

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  • Ghosal, Sayantan
  • Porter, James

Abstract

In this paper, we study out-of-equilibrium dynamics with decentralised exchange (bilateral bargaining between randomly matched pairs of agents). We characterise the conditions under which out-of-equilibrium trading converges to efficient allocations when agents are myopic, have limited information and incur utility losses relative to current holdings by engaging in (bounded) experimentation. We show, numerically, that the rate of convergence to efficient allocations is exponential across a variety of different settings where agents’ preferences can be represented by a Cobb–Douglas utility function. Finally the results are generalised to explicit exchange networks.

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Bibliographic Info

Article provided by Elsevier in its journal Mathematical Social Sciences.

Volume (Year): 66 (2013)
Issue (Month): 1 ()
Pages: 1-21

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Handle: RePEc:eee:matsoc:v:66:y:2013:i:1:p:1-21

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Web page: http://www.elsevier.com/locate/inca/505565

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References

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  1. Jackson, Matthew O. & Watts, Alison, 2002. "The Evolution of Social and Economic Networks," Journal of Economic Theory, Elsevier, vol. 106(2), pages 265-295, October.
  2. Ghosal, Sayantan & Morelli, Massimo, 2004. "Retrading in market games," Journal of Economic Theory, Elsevier, vol. 115(1), pages 151-181, March.
  3. Robert Axtell, 2005. "The Complexity of Exchange," Economic Journal, Royal Economic Society, vol. 115(504), pages F193-F210, 06.
  4. Michihiro Kandori & Roberto Serrano & Oscar Volij, 2004. "Decentralized Trade, Random Utility and the Evolution of Social Welfare," CIRJE F-Series CIRJE-F-286, CIRJE, Faculty of Economics, University of Tokyo.
  5. Gale,Douglas, 2000. "Strategic Foundations of General Equilibrium," Cambridge Books, Cambridge University Press, number 9780521644105, October.
  6. Roberto Serrano & Assaf Ben-Shoham & Oscar Volij, 2000. "The Evolution of Exchange," Economic theory and game theory 012, Oscar Volij.
  7. Arial Rubinstein & Asher Wolinsky, 1985. "Equilibrium in a Market with Sequential Bargaining," Levine's Working Paper Archive 623, David K. Levine.
  8. Fisher, Franklin M, 1981. "Stability, Disequilibrium Awareness, and the Perception of New Opportunities," Econometrica, Econometric Society, vol. 49(2), pages 279-317, March.
  9. Goldman, Steven M & Starr, Ross M, 1982. "Pairwise, t-Wise, and Pareto Optimalities," Econometrica, Econometric Society, vol. 50(3), pages 593-606, May.
  10. Gintis Herbert, 2006. "The Emergence of a Price System from Decentralized Bilateral Exchange," The B.E. Journal of Theoretical Economics, De Gruyter, vol. 6(1), pages 1-15, December.
  11. Feldman, Allan M, 1973. "Bilateral Trading, Processes, Pairwise Optimality, and Pareto Optimality," Review of Economic Studies, Wiley Blackwell, vol. 40(4), pages 463-73, October.
  12. Herbert Gintis, 2007. "The Dynamics of General Equilibrium," Economic Journal, Royal Economic Society, vol. 117(523), pages 1280-1309, October.
  13. Gale, Douglas M, 1986. "Bargaining and Competition Part II: Existence," Econometrica, Econometric Society, vol. 54(4), pages 807-18, July.
  14. Gale, Douglas M, 1986. "Bargaining and Competition Part I: Characterization," Econometrica, Econometric Society, vol. 54(4), pages 785-806, July.
  15. Gode, Dhananjay K & Sunder, Shyam, 1993. "Allocative Efficiency of Markets with Zero-Intelligence Traders: Market as a Partial Substitute for Individual Rationality," Journal of Political Economy, University of Chicago Press, vol. 101(1), pages 119-37, February.
  16. Shapley, Lloyd & Scarf, Herbert, 1974. "On cores and indivisibility," Journal of Mathematical Economics, Elsevier, vol. 1(1), pages 23-37, March.
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Cited by:
  1. Mandel, Antoine & Gintis, Herbert, 2014. "Stochastic stability in the Scarf economy," Mathematical Social Sciences, Elsevier, vol. 67(C), pages 44-49.
  2. Maria-Augusta Miceli & Federico Cecconi & Giovanni Cerulli, 2013. "Walrasian TatÈnnement by Sequential Pairwise Trading: Convergence and Welfare Implications," Working Papers 161, University of Rome La Sapienza, Department of Public Economics.

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