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Optimal Inference With a Multidimensional Multiscale Statistic- [electronic resource]
Optimal Inference With a Multidimensional Multiscale Statistic - [electronic resource]
Optimal Inference With a Multidimensional Multiscale Statistic- [electronic resource]

Detailed Information

자료유형  
 학위논문파일 국외
최종처리일시  
20240214101920
ISBN  
9798380593229
DDC  
310
저자명  
Datta, Pratyay Ashley.
서명/저자  
Optimal Inference With a Multidimensional Multiscale Statistic - [electronic resource]
발행사항  
[S.l.]: : Columbia University., 2023
발행사항  
Ann Arbor : : ProQuest Dissertations & Theses,, 2023
형태사항  
1 online resource(124 p.)
주기사항  
Source: Dissertations Abstracts International, Volume: 85-04, Section: B.
주기사항  
Advisor: Sen, Bodhisattva;Zheng, Tian.
학위논문주기  
Thesis (Ph.D.)--Columbia University, 2023.
사용제한주기  
This item must not be sold to any third party vendors.
초록/해제  
요약We observe a stochastic process Y on [0,1]d (d ≥ 1) satisfying dY(t)=n1/2f(t)dt + dW(t), t ∈ [0,1]d, where n ≥ 1 is a given scale parameter (`sample size'), W is the standard Brownian sheet on [0,1]d and f ∈ L1([0,1]d) is the unknown function of interest. We propose a multivariate multiscale statistic in this setting and prove that the statistic attains a subexponential tail bound; this extends the work of 'Dumbgen and Spokoiny (2001)' who proposed the analogous statistic for d = 1. In the process, we generalize Theorem 6.1 of 'Dumbgen and Spokoiny (2001)' about stochastic processes with sub-Gaussian increments on a pseudometric space, which is of independent interest. We use the proposed multiscale statistic to construct optimal tests (in an asymptotic minimax sense) for testing f = 0 versus (i) appropriate Holder classes of functions, and (ii) alternatives of the form f = μn IBn, where Bn is an axis-aligned hyperrectangle in [0,1]d and μn ∈ R; μn and Bn unknown. In Chapter 3 we use this proposed multiscale statistics to construct honest confidence bands for multivariate shape-restricted regression including monotone and convex functions.
일반주제명  
Statistics.
일반주제명  
Theoretical mathematics.
일반주제명  
Applied mathematics.
키워드  
Confidence bands
키워드  
Multidimensional optimal inference
키워드  
Multiscale statistics
키워드  
Shape restricted regression
기타저자  
Columbia University Statistics
기본자료저록  
Dissertations Abstracts International. 85-04B.
기본자료저록  
Dissertation Abstract International
전자적 위치 및 접속  
로그인 후 원문을 볼 수 있습니다.

MARC

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■020    ▼a9798380593229
■035    ▼a(MiAaPQ)AAI30689925
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a310
■1001  ▼aDatta,  Pratyay  Ashley.
■24510▼aOptimal  Inference  With  a  Multidimensional  Multiscale  Statistic▼h[electronic  resource]
■260    ▼a[S.l.]:▼bColumbia  University.  ▼c2023
■260  1▼aAnn  Arbor  :▼bProQuest  Dissertations  &  Theses,  ▼c2023
■300    ▼a1  online  resource(124  p.)
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  85-04,  Section:  B.
■500    ▼aAdvisor:  Sen,  Bodhisattva;Zheng,  Tian.
■5021  ▼aThesis  (Ph.D.)--Columbia  University,  2023.
■506    ▼aThis  item  must  not  be  sold  to  any  third  party  vendors.
■520    ▼aWe  observe  a  stochastic  process  Y  on  [0,1]d  (d  ≥  1)  satisfying  dY(t)=n1/2f(t)dt  +  dW(t),  t  ∈  [0,1]d,  where  n  ≥  1  is  a  given  scale  parameter  (`sample  size'),  W  is  the  standard  Brownian  sheet  on  [0,1]d  and  f  ∈  L1([0,1]d)  is  the  unknown  function  of  interest.  We  propose  a  multivariate  multiscale  statistic  in  this  setting  and  prove  that  the  statistic  attains  a  subexponential  tail  bound;  this  extends  the  work  of  'Dumbgen  and  Spokoiny  (2001)'  who  proposed  the  analogous  statistic  for  d  =  1.  In  the  process,  we  generalize  Theorem  6.1  of  'Dumbgen  and  Spokoiny  (2001)'  about  stochastic  processes  with  sub-Gaussian  increments  on  a  pseudometric  space,  which  is  of  independent  interest.  We  use  the  proposed  multiscale  statistic  to  construct  optimal  tests  (in  an  asymptotic  minimax  sense)  for  testing  f  =  0  versus  (i)  appropriate  Holder  classes  of  functions,  and  (ii)  alternatives  of  the  form  f  =  μn  IBn,  where  Bn  is  an  axis-aligned  hyperrectangle  in  [0,1]d  and  μn  ∈  R;  μn  and  Bn  unknown.  In  Chapter  3  we  use  this  proposed  multiscale  statistics  to  construct  honest  confidence  bands  for  multivariate  shape-restricted  regression  including  monotone  and  convex  functions.
■590    ▼aSchool  code:  0054.
■650  4▼aStatistics.
■650  4▼aTheoretical  mathematics.
■650  4▼aApplied  mathematics.
■653    ▼aConfidence  bands
■653    ▼aMultidimensional  optimal  inference
■653    ▼aMultiscale  statistics
■653    ▼aShape  restricted  regression
■690    ▼a0463
■690    ▼a0642
■690    ▼a0364
■71020▼aColumbia  University▼bStatistics.
■7730  ▼tDissertations  Abstracts  International▼g85-04B.
■773    ▼tDissertation  Abstract  International
■790    ▼a0054
■791    ▼aPh.D.
■792    ▼a2023
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T16935336▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.
■980    ▼a202402▼f2024

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