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作者:

Liu YouMing (Liu YouMing.) (学者:刘有明) | Wang HuiYing (Wang HuiYing.)

收录:

Scopus SCIE

摘要:

Donoho et al. in 1996 have made almost perfect achievements in wavelet estimation for a density function f in Besov spaces B-r,q(s)(R). Motivated by their work, we define new linear and nonlinear wavelet estimators f(n,m)(lin), f(n,m)(non) for density derivatives f((m)). It turns out that the linear estimation E(parallel to f(n,m)(lin) - f((m))parallel to(p)) for f((m)) is an element of B-r,q(s)(R) attains the optimal when r >= p, and the nonlinear one E(parallel to f(n,m)(non) - f((m))parallel to(p)) does the same if r <= p/2(s+m)+1. In addition, our method is applied to Sobolev spaces with non-negative integer exponents as well.

关键词:

Besov spaces density derivative optimality Sobolev spaces wavelet estimators

作者机构:

  • [ 1 ] [Liu YouMing]Beijing Univ Technol, Dept Appl Math, Beijing 100124, Peoples R China
  • [ 2 ] [Wang HuiYing]Beijing Univ Technol, Dept Appl Math, Beijing 100124, Peoples R China
  • [ 3 ] [Wang HuiYing]Cent Univ Finance & Econ, Sch Appl Math, Beijing 100081, Peoples R China

通讯作者信息:

  • [Wang HuiYing]Cent Univ Finance & Econ, Sch Appl Math, Beijing 100081, Peoples R China

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来源 :

SCIENCE CHINA-MATHEMATICS

ISSN: 1674-7283

年份: 2013

期: 3

卷: 56

页码: 483-495

1 . 4 0 0

JCR@2022

ESI学科: MATHEMATICS;

ESI高被引阀值:64

JCR分区:2

中科院分区:3

被引次数:

WoS核心集被引频次: 7

SCOPUS被引频次: 7

ESI高被引论文在榜: 0 展开所有

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