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arXiv 0705.4488math.PR
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Benford定律近似误差的显式界

Explicit bounds for the approximation error in Benford's law

Lutz Duembgen, Christoph Leuenberger

摘要:

Benford定律指出,对于许多随机变量X > 0,其前导数字D = D(X)近似满足方程P(D = d)= log_{10}(1 + 1/d),其中d = 1,2,.,9.这种现象来自另一个可能更直观的事实,应用于Y:= log_{10}(X):对于许多实随机变量Y,余数U:= Y - floor(Y)近似均匀分布在[0,1)上。本文根据Y的密度或其导数的全变差给出了后者近似的新的显式界,这些界是传统Fourier方法的一种有趣的替代方法,传统Fourier方法产生的结果大多是定性的。作为一个副产品,我们得到明确的界限近似误差本福德定律。

英文摘要:

Benford's law states that for many random variables X > 0 its leading digit D = D(X) satisfies approximately the equation P(D = d) = log_{10}(1 + 1/d) for d = 1,2,...,9. This phenomenon follows from another, maybe more intuitive fact, applied to Y := log_{10}(X): For many real random variables Y, the remainder U := Y - floor(Y) is approximately uniformly distributed on [0,1). The present paper provides new explicit bounds for the latter approximation in terms of the total variation of the density of Y or some derivative of it. These bounds are an interesting alternative to traditional Fourier methods which yield mostly qualitative results. As a by-product we obtain explicit bounds for the approximation error in Benford's law.

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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