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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
- Machine learning
- 기타저자
- New York University Mathematics
- 기본자료저록
- Dissertations Abstracts International. 86-12B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
008260126s2025 us c eng d■001000017356841
■00520260202103046
■006m o d
■007cr#unu||||||||
■020 ▼a9798286423507
■035 ▼a(MiAaPQ)AAI31930923
■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.


