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Single-value combinatorial auctions and algorithmic implementation in undominated strategies
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Journal of the ACM (JACM) archive
Volume 56 ,  Issue 1  (January 2009) table of contents
Article No. 4  
Year of Publication: 2009
ISSN:0004-5411
Authors
Moshe Babaioff  Microsoft Research -- Silicon Valley, Mountain View, California
Ron Lavi  The Technion -- Israel Institute of Technology, Haifa, Israel
Elan Pavlov  Massachusetts Institute of Technology, Cambridge, Massachusetts
Publisher
ACM  New York, NY, USA
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ABSTRACT

In this article, we are interested in general techniques for designing mechanisms that approximate the social welfare in the presence of selfish rational behavior. We demonstrate our results in the setting of Combinatorial Auctions (CA). Our first result is a general deterministic technique to decouple the algorithmic allocation problem from the strategic aspects, by a procedure that converts any algorithm to a dominant-strategy ascending mechanism. This technique works for any single value domain, in which each agent has the same value for each desired outcome, and this value is the only private information. In particular, for “single-value CAs”, where each player desires any one of several different bundles but has the same value for each of them, our technique converts any approximation algorithm to a dominant strategy mechanism that almost preserves the original approximation ratio. Our second result provides the first computationally efficient deterministic mechanism for the case of single-value multi-minded bidders (with private value and private desired bundles). The mechanism achieves an approximation to the social welfare which is close to the best possible in polynomial time (unless P=NP). This mechanism is an algorithmic implementation in undominated strategies, a notion that we define and justify, and is of independent interest.


REFERENCES

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Collaborative Colleagues:
Moshe Babaioff: colleagues
Ron Lavi: colleagues
Elan Pavlov: colleagues