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Asymptotic Theory and Statistical Inference for Discrete Optimal Transport
Asymptotic Theory and Statistical Inference for Discrete Optimal Transport
Asymptotic Theory and Statistical Inference for Discrete Optimal Transport

상세정보

자료유형  
 학위논문 서양
최종처리일시  
20260202103046
ISBN  
9798286423507
DDC  
310
저자명  
Liu, Shuyu.
서명/저자  
Asymptotic Theory and Statistical Inference for Discrete Optimal Transport
발행사항  
[Sl] : New York University, 2025
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2025
형태사항  
129 p
주기사항  
Source: Dissertations Abstracts International, Volume: 86-12, Section: B.
주기사항  
Advisor: Niles-Weed, Jonathan.
학위논문주기  
Thesis (Ph.D.)--New York University, 2025.
초록/해제  
요약Optimal transport, as a quantification of distance between distributions, has become a pivotal tool across statistics and machine learning. This dissertation addresses fundamental statistical challenges arising in discrete optimal transport, specifically focusing on asymptotic laws and statistical inference methods for empirical optimal transportation plans. By formulating discrete optimal transport problems as linear programs, the dissertation develops results applicable to general random linear programs, with the empirical discrete optimal transport problem serving as a notable example.In the first part, motivated by discrete optimal transport, we develop novel asymptotic distributional limits for linear programs with random constraints. Existing results by Klatt, Munk, & Zemel 2022 characterize these limits via a computationally intractable decomposition of R\uD835\uDC5B into a possibly exponential number of convex cones. We overcome this challenge by expressing the distributional limits through auxiliary linear programs solvable in polynomial time, thereby making it practically feasible to sample from the limit law. We also leverage tools from random convex geometry to give distributional limits for the entire set of random optimal solutions, when the optimum is not unique. Most importantly, we describe a simple, data-driven method to construct asymptotically valid confidence sets in polynomial time. In the second part, we propose a new estimator for the discrete optimal transport plan that enjoys a central limit theorem (CLT) type of convergence and naive bootstrap consistency. Previous work by Klatt, Tameling, & Munk 2020 showed that the regularized empirical optimal transport plan exhibits CLT-type weak convergence. However, their limit law centers at a regularized optimal plan, which introduces a fixed amount of bias compared to the true plan. We suggest a new regularization scheme and develop a debiasing technique inspired by Richardson-extrapolation. This estimator leads to an asymptotically unbiased Gaussian estimator, which allows statistical inferences for the true optimal plan via bootstrap. 
일반주제명  
Statistics
일반주제명  
Mathematics
일반주제명  
Theoretical physics
키워드  
Bootstrap
키워드  
Optimal transport
키워드  
Machine learning
키워드  
Data-driven method
키워드  
Central limit theorem
기타저자  
New York University Mathematics
기본자료저록  
Dissertations Abstracts International. 86-12B.
전자적 위치 및 접속  
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MARC

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■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a310
■1001  ▼aLiu,  Shuyu.
■24510▼aAsymptotic  Theory  and  Statistical  Inference  for  Discrete  Optimal  Transport
■260    ▼a[Sl]▼bNew  York  University▼c2025
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2025
■300    ▼a129  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  86-12,  Section:  B.
■500    ▼aAdvisor:  Niles-Weed,  Jonathan.
■5021  ▼aThesis  (Ph.D.)--New  York  University,  2025.
■520    ▼aOptimal  transport,  as  a  quantification  of  distance  between  distributions,  has  become  a  pivotal  tool  across  statistics  and  machine  learning.  This  dissertation  addresses  fundamental  statistical  challenges  arising  in  discrete  optimal  transport,  specifically  focusing  on  asymptotic  laws  and  statistical  inference  methods  for  empirical  optimal  transportation  plans.  By  formulating  discrete  optimal  transport  problems  as  linear  programs,  the  dissertation  develops  results  applicable  to  general  random  linear  programs,  with  the  empirical  discrete  optimal  transport  problem  serving  as  a  notable  example.In  the  first  part,  motivated  by  discrete  optimal  transport,  we  develop  novel  asymptotic  distributional  limits  for  linear  programs  with  random  constraints.  Existing  results  by  Klatt,  Munk,  &  Zemel  2022  characterize  these  limits  via  a  computationally  intractable  decomposition  of  R\uD835\uDC5B  into  a  possibly  exponential  number  of  convex  cones.  We  overcome  this  challenge  by  expressing  the  distributional  limits  through  auxiliary  linear  programs  solvable  in  polynomial  time,  thereby  making  it  practically  feasible  to  sample  from  the  limit  law.  We  also  leverage  tools  from  random  convex  geometry  to  give  distributional  limits  for  the  entire  set  of  random  optimal  solutions,  when  the  optimum  is  not  unique.  Most  importantly,  we  describe  a  simple,  data-driven  method  to  construct  asymptotically  valid  confidence  sets  in  polynomial  time. In  the  second  part,  we  propose  a  new  estimator  for  the  discrete  optimal  transport  plan  that  enjoys  a  central  limit  theorem  (CLT)  type  of  convergence  and  naive  bootstrap  consistency.  Previous  work  by  Klatt,  Tameling,  &  Munk  2020  showed  that  the  regularized  empirical  optimal  transport plan  exhibits  CLT-type  weak  convergence.  However,  their  limit  law  centers  at  a  regularized  optimal  plan,  which  introduces  a  fixed  amount  of  bias  compared  to  the  true  plan.  We  suggest  a  new  regularization  scheme  and  develop  a  debiasing  technique  inspired  by  Richardson-extrapolation.  This  estimator  leads  to  an  asymptotically  unbiased  Gaussian  estimator,  which  allows  statistical  inferences  for  the  true  optimal  plan  via  bootstrap. 
■590    ▼aSchool  code:  0146.
■650  4▼aStatistics
■650  4▼aMathematics
■650  4▼aTheoretical  physics
■653    ▼aBootstrap
■653    ▼aOptimal  transport
■653    ▼aMachine  learning
■653    ▼aData-driven  method
■653    ▼aCentral  limit  theorem
■690    ▼a0463
■690    ▼a0753
■690    ▼a0800
■690    ▼a0405
■71020▼aNew  York  University▼bMathematics.
■7730  ▼tDissertations  Abstracts  International▼g86-12B.
■790    ▼a0146
■791    ▼aPh.D.
■792    ▼a2025
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17356841▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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