Contingent Auctions with Allocative Externalities : Vickrey Versus the Ausubel-Milgrom Proxy Auction
We introduce contingent auction mechanisms, which is a supersetof combinatorial auctions, and where bidders submit bids on packagesthat are contingent on the whole nal assignment. Without externalities,the Vickrey and the Ausubel-Milgrom Proxy Auction areboth robust if items are perceived as substitutes. Such an equivalencebetween those formats may not hold with externalities and theanalog of the substitute condition is a complex unexplored issue. Weanalyse those issues in the Negative Group-Dependent Externalitiesframework, a general structure with allocative externalities betweenjoint-purchasers.
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| Length: | 42 |
| Date of creation: | 2007 |
| Date of revision: | |
| Handle: | RePEc:crs:wpaper:2007-26 |
| Contact details of provider: | Postal: 15 Boulevard Gabriel Peri 92245 Malakoff Cedex Phone: 01 41 17 60 81 Web page: http://www.crest.fr More information through EDIRC
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