On the entropy numbers of the mixed smoothness function classes
On the entropy numbers of the mixed smoothness function classes
复制标题
关于混合平滑函数类的熵数
DOI:
10.1016/j.jat.2017.02.002
复制
发表时间:
2016
期刊:
影响因子:
--
通讯作者:
V. Temlyakov
中科院分区:
文献类型:
--
作者:
V. Temlyakov
Behavior of the entropy numbers of classes of multivariate functions with mixed smoothness is studied here. This problem has a long history and some fundamental problems in the area are still open. The main goal of this paper is to develop a new method of proving the upper bounds for the entropy numbers. This method is based on recent developments of nonlinear approximation, in particular, on greedy approximation. This method consists of the following two steps strategy. At the first step we obtain bounds of the best m-term approximations with respect to a dictionary. At the second step we use general inequalities relating the entropy numbers to the best m-term approximations. For the lower bounds we use the volume estimates method, which is a well known powerful method for proving the lower bounds for the entropy numbers. It was used in a number of previous papers.
DOI:
10.1007/978-3-319-92240-9
发表时间:
2018
期刊:
arXiv: Numerical Analysis
影响因子:
--
作者:
D. Dũng;V.N. Temlyakov;T. Ullrich
通讯作者:
T. Ullrich