skip to main content
10.1145/1993574.1993587acmconferencesArticle/Chapter ViewAbstractPublication PagesecConference Proceedingsconference-collections
research-article

GSP auctions with correlated types

Published: 05 June 2011 Publication History

Abstract

The Generalized Second Price (GSP) auction is the primary method by which sponsered search advertisements are sold. We study the performance of this auction in the Bayesian setting for players with correlated types. Correlation arises very naturally in the context of sponsored search auctions, especially as a result of uncertainty inherent in the behaviour of the underlying ad allocation algorithm. We demonstrate that the Bayesian Price of Anarchy of the GSP auction is bounded by $4$, even when agents have arbitrarily correlated types. Our proof highlights a connection between the GSP mechanism and the concept of smoothness in games, which may be of independent interest.
For the special case of uncorrelated (i.e. independent) agent types, we improve our bound to 2(1-1/e)-1 ≅ 3.16, significantly improving upon previously known bounds. Using our techniques, we obtain the same bound on the performance of GSP at coarse correlated equilibria, which captures (for example) a repeated-auction setting in which agents apply regret-minimizing bidding strategies. Moreoever, our analysis is robust against the presence of irrational bidders and settings of asymmetric information, and our bounds degrade gracefully when agents apply strategies that form only an approximate equilibrium.

References

[1]
K. Bhawalkar and T. Roughgarden. Welfare guarantees for combinatorial auctions with item bidding. In SODA 2011, 2011.
[2]
A. Blum, M. Hajiaghayi, K. Ligett, and A. Roth. Regret minimization and the price of total anarchy. In STOC08, 2008.
[3]
I. Caragiannis, P. Kanellopoulos, C. Kaklamanis, and M. Kyropoulou. On the efficiency of equilibria in generalized second price auctions. In EC'11, 2011.
[4]
G. Christodoulou, A. Kovacs, and M. Schapira. Bayesian combinatorial auctions. In ICALP '08: Proceedings of the 35th international colloquium on Automata, Languages and Programming, Part I, pages 820--832, Berlin, Heidelberg, 2008. Springer-Verlag.
[5]
S. Dobzinski, H. Fu, and R. Kleinberg. Optimal auctions with correlated bidders are easy. In STOC 2011, 2011.
[6]
B. Edelman, M. Ostrovsky, and M. Schwarz. Internet advertising and the generalized second-price auction: Selling billions of dollars worth of keywords. The American Economic Review, 97(1):242--259, March 2007.
[7]
B. Edelman and M. Schwarz. Optimal auction design and equilibrium selection in sponsored search auctions. In Working Paper, 2010.
[8]
R. D. Gomes and K. S. Sweeney. Bayes-nash equilibria of the generalized second price auction. In EC '09: Proceedings of the tenth ACM conference on Electronic commerce, pages 107--108, New York, NY, USA, 2009. ACM.
[9]
J. Hannan. Approximation to bayes risk in repeated plays. In M. Dresher, A. Tucker, and P. Wolfe, editors, Contributions to the Theory of Games, volume 4. Princeton University Press, 1957.
[10]
S. Kakade, A. Kalai, and K. Ligett. Playing games with approximation algorithms. In STOC07, 2007.
[11]
A. Kalai and S. Vempala. Efficient algorithms for online decision problems. J. Comput. Syst. Sci., 2005.
[12]
S. Lahaie. An analysis of alternative slot auction designs for sponsored search. In EC '06: Proceedings of the 7th ACM conference on Electronic commerce, pages 218--227, New York, NY, USA, 2006. ACM.
[13]
S. Lahaie, D. Pennock, A. Saberi, and R. Vohra. Algorithmic Game Theory, chapter Sponsored search auctions, pages 699--716. Cambridge University Press, 2007.
[14]
B. Lucier. Beyond equilibria: Mechanisms for repeated combinatorial auctions. In ICS10: Innovations in Computer Science 2010, 2010.
[15]
B. Lucier and A. Borodin. Price of anarchy for greedy auctions. In SODA '10. ACM, 2010.
[16]
A. Mehta, A. Saberi, U. V. Vazirani, and V. V. Vazirani. Adwords and generalized on-line matching. In FOCS, pages 264--273, 2005.
[17]
A. Mehta, A. Saberi, U. V. Vazirani, and V. V. Vazirani. Adwords and generalized online matching. J. ACM, 54(5), 2007.
[18]
R. Paes Leme and Eva Tardos. Bayes-nash price of anarchy for gsp. In AdAuctions Workshop 2010, 2010.
[19]
R. Paes Leme and Eva Tardos. Pure and bayes-nash price of anarchy for generalized second price auctions. In FOCS10: 51st Annual IEEE Symposium on Foundations of Computer Science, 2010.
[20]
R. Paes Leme and Eva Tardos. Sponsored search equilibria for conservative bidders. In AdAuctions Workshop 2009, 2010.
[21]
R. Paes Leme and B. Lucier. Improved social welfare bounds for gsp at equilibrium. In arXiv, 2011.
[22]
C. Papadimitriou and G. Pierrakos. On optimal single-item auctions. In STOC 2011, 2011.
[23]
T. Roughgarden. Intrinsic robustness of the price of anarchy. In STOC '09: Proceedings of the 41st annual ACM symposium on Theory of computing, pages 513--522, New York, NY, USA, 2009. ACM.
[24]
H. R. Varian. Position auctions. International Journal of Industrial Organization, 2006.

Cited By

View all
  • (2024)Deep Reinforcement Learning and Influenced GamesIEEE Access10.1109/ACCESS.2024.344387312(114086-114099)Online publication date: 2024
  • (2023)Private Data Manipulation in Sponsored Search AuctionsCAAI Artificial Intelligence Research10.26599/AIR.2023.9150024(9150024)Online publication date: Dec-2023
  • (2023)Breaking the traditional: a survey of algorithmic mechanism design applied to economic and complex environmentsNeural Computing and Applications10.1007/s00521-023-08647-135:22(16193-16222)Online publication date: 20-May-2023
  • Show More Cited By

Index Terms

  1. GSP auctions with correlated types

    Recommendations

    Comments

    Information & Contributors

    Information

    Published In

    cover image ACM Conferences
    EC '11: Proceedings of the 12th ACM conference on Electronic commerce
    June 2011
    384 pages
    ISBN:9781450302616
    DOI:10.1145/1993574
    Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

    Sponsors

    Publisher

    Association for Computing Machinery

    New York, NY, United States

    Publication History

    Published: 05 June 2011

    Permissions

    Request permissions for this article.

    Check for updates

    Author Tags

    1. price of anarchy
    2. sponsored search auctions

    Qualifiers

    • Research-article

    Conference

    EC '11
    Sponsor:
    EC '11: ACM Conference on Electronic Commerce
    June 5 - 9, 2011
    California, San Jose, USA

    Acceptance Rates

    Overall Acceptance Rate 664 of 2,389 submissions, 28%

    Upcoming Conference

    EC '25
    The 25th ACM Conference on Economics and Computation
    July 7 - 11, 2025
    Stanford , CA , USA

    Contributors

    Other Metrics

    Bibliometrics & Citations

    Bibliometrics

    Article Metrics

    • Downloads (Last 12 months)6
    • Downloads (Last 6 weeks)1
    Reflects downloads up to 03 Mar 2025

    Other Metrics

    Citations

    Cited By

    View all
    • (2024)Deep Reinforcement Learning and Influenced GamesIEEE Access10.1109/ACCESS.2024.344387312(114086-114099)Online publication date: 2024
    • (2023)Private Data Manipulation in Sponsored Search AuctionsCAAI Artificial Intelligence Research10.26599/AIR.2023.9150024(9150024)Online publication date: Dec-2023
    • (2023)Breaking the traditional: a survey of algorithmic mechanism design applied to economic and complex environmentsNeural Computing and Applications10.1007/s00521-023-08647-135:22(16193-16222)Online publication date: 20-May-2023
    • (2022)Simple mechanisms for welfare maximization in rich advertising auctionsProceedings of the 36th International Conference on Neural Information Processing Systems10.5555/3600270.3602320(28280-28292)Online publication date: 28-Nov-2022
    • (2022)Equilibria in Auctions with Ad TypesProceedings of the ACM Web Conference 202210.1145/3485447.3512052(68-78)Online publication date: 25-Apr-2022
    • (2020)Pricing Multi-Unit MarketsACM Transactions on Economics and Computation10.1145/33737157:4(1-29)Online publication date: 30-Jan-2020
    • (2020)Envy, Regret, and Social Welfare LossProceedings of The Web Conference 202010.1145/3366423.3380057(2913-2919)Online publication date: 20-Apr-2020
    • (2020)Private Data Manipulation in Optimal Sponsored Search AuctionProceedings of The Web Conference 202010.1145/3366423.3380023(2676-2682)Online publication date: 20-Apr-2020
    • (2019)The price of anarchy for utilitarian scheduling games on related machinesDiscrete Optimization10.1016/j.disopt.2018.08.00131:C(29-39)Online publication date: 1-Feb-2019
    • (2018)Computational pricing in Internet eraFrontiers of Computer Science: Selected Publications from Chinese Universities10.1007/s11704-017-6005-012:1(40-54)Online publication date: 1-Feb-2018
    • Show More Cited By

    View Options

    Login options

    View options

    PDF

    View or Download as a PDF file.

    PDF

    eReader

    View online with eReader.

    eReader

    Figures

    Tables

    Media

    Share

    Share

    Share this Publication link

    Share on social media