본문

서브메뉴

Advances in Multiple Testing and Variable Selection
Advances in Multiple Testing and Variable Selection
Advances in Multiple Testing and Variable Selection

상세정보

자료유형  
 학위논문 서양
최종처리일시  
20260202103535
ISBN  
9798288866197
DDC  
310
저자명  
Luo, Yixiang.
서명/저자  
Advances in Multiple Testing and Variable Selection
발행사항  
[Sl] : University of California, Berkeley, 2025
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2025
형태사항  
151 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-01, Section: B.
주기사항  
Advisor: Fithian, William;Evans, Steven.
학위논문주기  
Thesis (Ph.D.)--University of California, Berkeley, 2025.
초록/해제  
요약In contemporary scientific research, variable selection from numerous candidates represents a fundamental challenge with diverse objectives: building predictive models that balance selection accuracy and predictive power, testing multiple hypotheses with controlled error rates, and quantifying the likelihood of each variable being a true signal. While variable selection can be formalized within multiple hypothesis testing frameworks, classical p-value-based methods often prove inadequate when complex modeling procedures are involved. This dissertation addresses the issues through three novel methodological contributions.Chapter 1-based on Luo et al. (2024)-introduces a conservative estimator for the false discovery rate (FDR) applicable to any variable selection procedure in common statistical modeling settings. Our estimator complements cross-validation by elucidating the trade-off between prediction error and variable selection accuracy as a function of model complexity. We prove that our estimator maintains conservative bias in finite samples under standard assumptions and provide a bootstrap methodology for standard error assessment.The knockoff filter of Barber and Candes (2015) provides a powerful framework for multiple testing with FDR control by leveraging supervised learning models, yet suffers from critical limitations in specific scenarios. Chapter 2-based on Luo et al. (2022)-develops the calibrated knockoff procedure, which uniformly improves the power of any knockoff procedure while preserving FDR control. Our theoretical and empirical analyses demonstrate particularly significant improvements in two scenarios where knockoff methods can be nearly powerless: when rejection sets are small, and when design matrix structures inhibit the construction of effective knockoff variables.Chapter 3 is as-yet unpublished work and presents a novel estimator for the frequentist local false discovery rate (lfdr), which addresses the question of how likely each variable is to represent noise rather than signal. While empirical Bayes methods effectively address large-scale testing problems, they rely on correct Bayesian model specifications. Our estimator, constructed within a purely frequentist framework, addresses this limitation. We establish that in asymptotic regimes characteristic of large-scale testing, our estimator converges to an upper bound of the true frequentist lfdr, enabling validation of empirical Bayes inference and conservative recalibration when necessary.
일반주제명  
Statistics
일반주제명  
Applied mathematics
키워드  
False discovery rate
키워드  
Knockoff
키워드  
Local false discovery rate
키워드  
Multiple testing
키워드  
Variable selection
기타저자  
University of California, Berkeley Mathematics
기본자료저록  
Dissertations Abstracts International. 87-01B.
전자적 위치 및 접속  
로그인 후 원문을 볼 수 있습니다.

MARC

 008260126s2025        us                              c    eng  d
■001000017357605
■00520260202103535
■006m          o    d                
■007cr#unu||||||||
■020    ▼a9798288866197
■035    ▼a(MiAaPQ)AAI32040414
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a310
■1001  ▼aLuo,  Yixiang.
■24510▼aAdvances  in  Multiple  Testing  and  Variable  Selection
■260    ▼a[Sl]▼bUniversity  of  California,  Berkeley▼c2025
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2025
■300    ▼a151  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  87-01,  Section:  B.
■500    ▼aAdvisor:  Fithian,  William;Evans,  Steven.
■5021  ▼aThesis  (Ph.D.)--University  of  California,  Berkeley,  2025.
■520    ▼aIn  contemporary  scientific  research,  variable  selection  from  numerous  candidates  represents  a  fundamental  challenge  with  diverse  objectives:  building  predictive  models  that  balance  selection  accuracy  and  predictive  power,  testing  multiple  hypotheses  with  controlled  error  rates,  and  quantifying  the  likelihood  of  each  variable  being  a  true  signal.  While  variable  selection  can  be  formalized  within  multiple  hypothesis  testing  frameworks,  classical  p-value-based  methods  often  prove  inadequate  when  complex  modeling  procedures  are  involved.  This  dissertation  addresses  the  issues  through  three  novel  methodological  contributions.Chapter  1-based  on  Luo  et  al.  (2024)-introduces  a  conservative  estimator  for  the  false  discovery  rate  (FDR)  applicable  to  any  variable  selection  procedure  in  common  statistical  modeling  settings.  Our  estimator  complements  cross-validation  by  elucidating  the  trade-off  between  prediction  error  and  variable  selection  accuracy  as  a  function  of  model  complexity.  We  prove  that  our  estimator  maintains  conservative  bias  in  finite  samples  under  standard  assumptions  and  provide  a  bootstrap  methodology  for  standard  error  assessment.The  knockoff  filter  of  Barber  and  Candes  (2015)  provides  a  powerful  framework  for  multiple  testing  with  FDR  control  by  leveraging  supervised  learning  models,  yet  suffers  from  critical  limitations  in  specific  scenarios.  Chapter  2-based  on  Luo  et  al.  (2022)-develops  the  calibrated  knockoff  procedure,  which  uniformly  improves  the  power  of  any  knockoff  procedure  while  preserving  FDR  control.  Our  theoretical  and  empirical  analyses  demonstrate  particularly  significant  improvements  in  two  scenarios  where  knockoff  methods  can  be  nearly  powerless:  when  rejection  sets  are  small,  and  when  design  matrix  structures  inhibit  the  construction  of  effective  knockoff  variables.Chapter  3  is  as-yet  unpublished  work  and  presents  a  novel  estimator  for  the  frequentist  local  false  discovery  rate  (lfdr),  which  addresses  the  question  of  how  likely  each  variable  is  to  represent  noise  rather  than  signal.  While  empirical  Bayes  methods  effectively  address  large-scale  testing  problems,  they  rely  on  correct  Bayesian  model  specifications.  Our  estimator,  constructed  within  a  purely  frequentist  framework,  addresses  this  limitation.  We  establish  that  in  asymptotic  regimes  characteristic  of  large-scale  testing,  our  estimator  converges  to  an  upper  bound  of  the  true  frequentist  lfdr,  enabling  validation  of  empirical  Bayes  inference  and  conservative  recalibration  when  necessary.
■590    ▼aSchool  code:  0028.
■650  4▼aStatistics
■650  4▼aApplied  mathematics
■653    ▼aFalse  discovery  rate
■653    ▼aKnockoff
■653    ▼aLocal  false  discovery  rate
■653    ▼aMultiple  testing
■653    ▼aVariable  selection
■690    ▼a0463
■690    ▼a0364
■71020▼aUniversity  of  California,  Berkeley▼bMathematics.
■7730  ▼tDissertations  Abstracts  International▼g87-01B.
■790    ▼a0028
■791    ▼aPh.D.
■792    ▼a2025
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17357605▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

미리보기

내보내기

chatGPT토론

Ai 추천 관련 도서


    신착도서 더보기
    최근 3년간 통계입니다.

    소장정보

    • 예약
    • 소재불명신고
    • 나의폴더
    • 우선정리요청
    • 비도서대출신청
    • 야간 도서대출신청
    소장자료
    등록번호 청구기호 소장처 대출가능여부 대출정보
    TF17973 전자도서 대출가능 마이폴더 부재도서신고 비도서대출신청 야간 도서대출신청

    * 대출중인 자료에 한하여 예약이 가능합니다. 예약을 원하시면 예약버튼을 클릭하십시오.

    해당 도서를 다른 이용자가 함께 대출한 도서

    관련 인기도서

    로그인 후 이용 가능합니다.