The Hardness of Dominant Strategy Mechanism Design, Revisited

We study the communication complexity of \emph{dominant-strategy incentive-compatible} (DSIC) mechanisms for combinatorial auctions. For $γ\in [\log m, m]$, let $\mathsf{DSIC_{GEN}}(m, γ)$, $\mathsf{DSIC_{XOS}}(m, γ)$, and $\mathsf{DSIC_{GS}}(m, γ)$ denote the best approximation ratio attainable by