First-Passage Percolation on a Width-2 Strip and the Path Cost in a VCG Auction

  • Abraham Flaxman
  • David Gamarnik
  • Gregory B. Sorkin
Conference paper

DOI: 10.1007/11944874_10

Part of the Lecture Notes in Computer Science book series (LNCS, volume 4286)
Cite this paper as:
Flaxman A., Gamarnik D., Sorkin G.B. (2006) First-Passage Percolation on a Width-2 Strip and the Path Cost in a VCG Auction. In: Spirakis P., Mavronicolas M., Kontogiannis S. (eds) Internet and Network Economics. WINE 2006. Lecture Notes in Computer Science, vol 4286. Springer, Berlin, Heidelberg


We study both the time constant for first-passage percolation, and the Vickery-Clarke-Groves (VCG) payment for the shortest path, on a width-2 strip with random edge costs. These statistics attempt to describe two seemingly unrelated phenomena, arising in physics and economics respectively: the first-passage percolation time predicts how long it takes for a fluid to spread through a random medium, while the VCG payment for the shortest path is the cost of maximizing social welfare among selfish agents. However, our analyses of the two are quite similar, and require solving (slightly different) recursive distributional equations. Using Harris chains, we can characterize distributions, not just expectations.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Abraham Flaxman
    • 1
  • David Gamarnik
    • 2
  • Gregory B. Sorkin
    • 3
  1. 1.Department of Mathematical SciencesCarnegie Mellon University Pittsburgh
  2. 2.MIT Sloan School of Management Cambridge
  3. 3.Department of Mathematical SciencesIBM T.J. Watson Research CenterYorktown Heights

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