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Sequential auctions for objects with common and private values

Sequential auctions for objects with common and private values
Sequential auctions for objects with common and private values
Sequential auctions are an important mechanism for buying/selling multiple objects. Existing work has studied sequential auctions for objects that are exclusively either common value or private value. However, in many real-world cases an object has both features. Also, in such cases, the common value component (which is the same for all bidders) depends on how much each bidder values the object. Moreover, an individual bidder generally does not know how much the other bidders value it. On the other hand, a bidder's private value is independent of the others' private values. Given this,we study settings that have both common and private value elements by treating each bidder's information about the common value as uncertain. We first determine equilibrium bidding strategies for each auction in a sequence using English auction rules. On the basis of this equilibrium, we analyse the efficiency of auctions. Specifically, we show that the inefficiency that arises as a result of uncertainty about the common values can be reduced if the auctioneer makes its information about the common value known to all bidders. Moreover, our analysis also shows that the inefficiency of auctions in an agent-based setting is higher than that in an all-human setting.
635-642
Fatima, S.
63e6d4ad-830e-4b14-baf4-90d7d34eca30
Wooldridge, M.
955b6c39-0d07-430e-b68d-b9a96d6e14e7
Jennings, N. R.
ab3d94cc-247c-4545-9d1e-65873d6cdb30
Fatima, S.
63e6d4ad-830e-4b14-baf4-90d7d34eca30
Wooldridge, M.
955b6c39-0d07-430e-b68d-b9a96d6e14e7
Jennings, N. R.
ab3d94cc-247c-4545-9d1e-65873d6cdb30

Fatima, S., Wooldridge, M. and Jennings, N. R. (2005) Sequential auctions for objects with common and private values. 4th International Joint Conference on Autonomous Agents and Multi-Agent Systems, Utrecht, Netherlands. 25 - 29 Jul 2005. pp. 635-642 .

Record type: Conference or Workshop Item (Paper)

Abstract

Sequential auctions are an important mechanism for buying/selling multiple objects. Existing work has studied sequential auctions for objects that are exclusively either common value or private value. However, in many real-world cases an object has both features. Also, in such cases, the common value component (which is the same for all bidders) depends on how much each bidder values the object. Moreover, an individual bidder generally does not know how much the other bidders value it. On the other hand, a bidder's private value is independent of the others' private values. Given this,we study settings that have both common and private value elements by treating each bidder's information about the common value as uncertain. We first determine equilibrium bidding strategies for each auction in a sequence using English auction rules. On the basis of this equilibrium, we analyse the efficiency of auctions. Specifically, we show that the inefficiency that arises as a result of uncertainty about the common values can be reduced if the auctioneer makes its information about the common value known to all bidders. Moreover, our analysis also shows that the inefficiency of auctions in an agent-based setting is higher than that in an all-human setting.

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Published date: 2005
Venue - Dates: 4th International Joint Conference on Autonomous Agents and Multi-Agent Systems, Utrecht, Netherlands, 2005-07-25 - 2005-07-29
Organisations: Agents, Interactions & Complexity

Identifiers

Local EPrints ID: 260812
URI: http://eprints.soton.ac.uk/id/eprint/260812
PURE UUID: ab2afcc4-8d4d-4135-afdf-6cd3ec43be1d

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Date deposited: 29 Apr 2005
Last modified: 09 Sep 2019 18:56

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