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arXiv 1012.3614math.PR
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用优化测度研究高斯过程的小偏差

On Small deviations of Gaussian processes using majorizing measures

Michel Weber

摘要:

我们给出了两个周期高斯过程的例子,具有完全相同的顺序,但从根本上不同的小偏差的熵数。我们的构造是基于经典Knopp关于连续无处可微函数存在性的结果,更确切地说是基于Loud函数。我们还得到了一般的小偏差的下界使用优测度方法。我们的例子表明,我们的界限是尖锐的。我们也将其应用到高斯独立序列和超度量高斯过程的一般类。60 F15、60 G50;次级:60 F05

英文摘要:

We give two examples of periodic Gaussian processes, having entropy numbers of exactly same order but radically different small deviations. Our construction is based on classical Knopp's result yielding of existence of continuous nowhere differentiable functions, and more precisely on Loud's functions. We also obtain a general lower bound for small deviations using the majorizing measure method. We show on examples that our bound is sharp. We also apply it to Gaussian independent sequences and to the generic class of ultrametric Gaussian processes. 60F15, 60G50 ; Secondary: 60F05

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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