Improved Truthful Mechanisms for Subadditive Combinatorial Auctions: Breaking the Logarithmic Barrier
Improved Truthful Mechanisms for Subadditive Combinatorial Auctions: Breaking the Logarithmic Barrier
复制标题
改进的次加性组合拍卖的真实机制:打破对数障碍
DOI:
10.1137/1.9781611976465.40
复制
发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Sahil Singla
中科院分区:
文献类型:
--
作者:
Sepehr Assadi;Thomas Kesselheim;Sahil Singla
We present a computationally-efficient truthful mechanism for combinatorial auctions with subadditive bidders that achieves an $O((\log\!\log{m})^3)$-approximation to the maximum welfare in expectation using $O(n)$ demand queries; here $m$ and $n$ are the number of items and bidders, respectively. This breaks the longstanding logarithmic barrier for the problem dating back to the $O(\log{m}\cdot\log\!\log{m})$-approximation mechanism of Dobzinski from 2007. Along the way, we also improve and considerably simplify the state-of-the-art mechanisms for submodular bidders.
DOI:
10.1145/3357713.3384267
发表时间:
2020
期刊:
Symposium on Theory of Computing
影响因子:
--
作者:
Assadi, Sepehr;Khandeparkar, Hrishikesh;Saxena, Raghuvansh R.;Weinberg, S. Matthew
通讯作者:
Weinberg, S. Matthew
DOI:
10.1109/focs.2019.00025
发表时间:
2019
期刊:
Foundations of Computer Science
影响因子:
--
作者:
Ezra, Tomer;Feldman, Michal;Neyman, Eric;Talgam-Cohen, Inbal;Weinberg, Matt
通讯作者:
Weinberg, Matt