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arXiv 2005.00504cs.GT
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一致次可加估值下的一致福利保证

Uniform Welfare Guarantees Under Identical Subadditive Valuations

Siddharth Barman, Ranjani G. Sundaram

摘要:

我们研究的问题,分配不可分割的商品代理商,有一个相同的次加性的商品估值。分配的公平性和效率的程度是由分配在代理人之间产生的价值的广义平均值来衡量的。广义平均福利由指数项$p$参数化,包含多个研究充分的目标,如社会福利、纳什社会福利和平等主义福利。我们建立,在相同的次加性估值和需求预言模型,可以有效地找到一个单一的分配,近似最佳的广义平均福利--在一个因素$40$ -均匀的所有$p \in (-\infty, 1]$。因此,通过一个常数因子的近似算法,我们得到了新的结果,最大化纳什社会福利和平等福利相同的次可加估值。

英文摘要:

We study the problem of allocating indivisible goods among agents that have an identical subadditive valuation over the goods. The extent of fairness and efficiency of allocations is measured by the generalized means of the values that the allocations generate among the agents. Parameterized by an exponent term $p$, generalized-mean welfares encompass multiple well-studied objectives, such as social welfare, Nash social welfare, and egalitarian welfare. We establish that, under identical subadditive valuations and in the demand oracle model, one can efficiently find a single allocation that approximates the optimal generalized-mean welfare---to within a factor of $40$---uniformly for all $p \in (-\infty, 1]$. Hence, by way of a constant-factor approximation algorithm, we obtain novel results for maximizing Nash social welfare and egalitarian welfare for identical subadditive valuations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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