VCG Under Sybil (False name) Attacks --- a Bayesian Analysis
national conference on artificial intelligence, 2020.
VCG is a classical combinatorial auction that maximizes social welfare. However, while the standard single-item Vickrey auction is false-name-proof, a major failure of multi-item VCG is its vulnerability to false-name attacks. This occurs already in the natural bare minimum model in which there are two identical items and bidders are si...More
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