Communication Complexity of Statistical Distance

Communication Complexity of Statistical Distance
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统计距离的通信复杂度

DOI:
10.1145/3170708
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发表时间:
2018
影响因子:
0.7
通讯作者:
Watson, Thomas
Watson, Thomas
中科院分区:
--
文献类型:
--
作者:
Watson, Thomas

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我们证明了以下问题的随机通信复杂度的上界和下界几乎匹配:Alice和Bob都被赋予了一个关于n个元素的概率分布,并且他们希望在±ε内估计他们的分布之间的统计(总变差)距离。对于某些范围的参数,有一个lognfactor之间的差距上限和下限,我们确定了一个障碍,使用信息复杂性技术,以提高在这种情况下的下限。我们还证明了沿着发现的一个副结果:由n位大于组成的n位多数的随机通信复杂度为Θ(nlogn)。
We prove nearly matching upper and lower bounds on the randomized communication complexity of the following problem: Alice and Bob are each given a probability distribution overnelements, and they wish to estimate within ±ε the statistical (total variation) distance between their distributions. For some range of parameters, there is up to a lognfactor gap between the upper and lower bounds, and we identify a barrier to using information complexity techniques to improve the lower bound in this case. We also prove a side result that we discovered along the way: the randomized communication complexity ofn-bit Majority composed withn-bit Greater Than is Θ (nlogn).
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期刊: Proceedings of the forty-seventh annual ACM symposium on Theory of Computing
影响因子: --
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期刊: 2012 IEEE 53rd Annual Symposium on Foundations of Computer Science
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影响因子: 1.4
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