The recovery of ridge functions on the hypercube suffers from the curse of dimensionality
The recovery of ridge functions on the hypercube suffers from the curse of dimensionality
复制标题
超立方体上岭函数的恢复遭受维数灾难
DOI:
10.1016/j.jco.2020.101521
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
S. Mayer
中科院分区:
文献类型:
--
作者:
B. Doerr;S. Mayer
A multivariate ridge function is a function of the form f (x)= g (a T x), where g is univariate and a∈ R d. We show that the recovery of an unknown ridge function defined on the hypercube [− 1, 1] d with Lipschitz-regular profile g suffers from the curse of dimensionality when the recovery error is measured in the L∞-norm, even if we allow randomized algorithms. If a limited number of components of a is substantially larger than the others, then the curse of dimensionality is not present and the problem is weakly tractable, provided the profile g is sufficiently regular.
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