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Abstract:
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.
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Source :
SCIENCE CHINA-MATHEMATICS
ISSN: 1674-7283
Year: 2013
Issue: 3
Volume: 56
Page: 483-495
1 . 4 0 0
JCR@2022
ESI Discipline: MATHEMATICS;
JCR Journal Grade:2
CAS Journal Grade:3
Cited Count:
WoS CC Cited Count: 8
SCOPUS Cited Count: 8
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 9
Affiliated Colleges: