Improved Truthful Mechanisms for Subadditive Combinatorial Auctions: Breaking the Logarithmic Barrier

Improved Truthful Mechanisms for Subadditive Combinatorial Auctions: Breaking the Logarithmic Barrier
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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
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发表时间:
2020
期刊:
Proceedings of the 53rd Annual ACM SIGACT Symposium on Theory of Computing
影响因子:
--
通讯作者:
Sahil Singla
Sahil Singla
中科院分区:
--
文献类型:
--
作者:
Sepehr Assadi;Thomas Kesselheim;Sahil Singla

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我们提出了一种计算高效的真实性机制,用于与亚addive Bidders组合拍卖,该机制可实现$ o(((\ log \!\ log {m})^3)$ - 使用$ o(n)$的期望中的最大福利近似 - 需求查询;这里分别是$ m $和$ n $的项目和竞标者的数量。这打破了长期存在的对数障碍的问题,该问题可以追溯到$ o(\ log {m} \ cdot \ log \!\ log \!\ log {m})$ - dobzinski的近似机制。大大简化了子模型竞标者的最新机制。
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