Are Few Bins Enough: Testing Histogram Distributions

Are Few Bins Enough: Testing Histogram Distributions
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箱数就够了:测试直方图分布

DOI:
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发表时间:
2016
期刊:
ACM SIGACT-SIGMOD-SIGART Symposium on Principles of Database Systems
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通讯作者:
C. Canonne
C. Canonne
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作者:
C. Canonne

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如果在大多数k连续的间隔上可以将其表示为分段构函数,则在有序的宇宙[n] = {1,...,...,n}上的概率分布被称为k-示威。我们研究以下问题:给定在[n]上的任意分布d的样本,必须确定d是k-示例,还是与任何此类简洁表示的距离距离l_1距离很远。我们为此问题获得了一个样本和时间效率的算法,并在此任务所需的样本数量上获得了几乎匹配的信息理论下限。由于Indyk,Levi和Rubinfeld 2012)和Canonne,Diakonikolas,Gouleakis和Rubinfeld(2016),我们的结果对先前最新的结果大大改善。
A probability distribution over an ordered universe [n]={1,...,n} is said to be a k-histogram if it can be represented as a piecewise-constant function over at most k contiguous intervals. We study the following question: given samples from an arbitrary distribution D over [n], one must decide whether D is a k-histogram, or is far in L_1 distance from any such succinct representation. We obtain a sample and time-efficient algorithm for this problem, complemented by a nearly-matching information-theoretic lower bound on the number of samples required for this task. Our results significantly improve on the previous state-of-the-art, due to Indyk, Levi, and Rubinfeld 2012) and Canonne, Diakonikolas, Gouleakis, and Rubinfeld (2016).
近线性时间内的样本最优密度估计
DOI: 10.48550/arxiv.1506.00671
发表时间: 2015
期刊: --
影响因子: --
作者:
Acharya J
通讯作者: Acharya J
使用可变宽度直方图的近线性时间中的近最优密度估计
DOI: 10.48550/arxiv.1411.0169
发表时间: 2014
期刊: --
影响因子: --
作者:
Chan S
通讯作者: Chan S