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Graph-Informed Sequential Decision Making
Graph-Informed Sequential Decision Making
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202105151
- ISBN
- 9798293834754
- DDC
- 310
- 저자명
- Wu, Shuang.
- 서명/저자
- Graph-Informed Sequential Decision Making
- 발행사항
- [Sl] : University of California, Los Angeles, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 165 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-03, Section: B.
- 주기사항
- Advisor: Amini, Arash A.
- 학위논문주기
- Thesis (Ph.D.)--University of California, Los Angeles, 2025.
- 초록/해제
- 요약This dissertation studies graph-informed sequential decision making, where graphs enter the bandit problem either as data-actions, contexts, rewards-or as structure that couples decisions, observations and agents. Algorithms that leverage graph priors to accelerate learning under limited feedback are developed with comprehensive theoretical analysis in this work.Part I introduces the backgrounds of the models and concepts in both statistical sequential decision making and machine learning on graphs. Chapter 1 elucidates bandit problems and algorithms, while Chapter 2 introduces graph learning models, from graph spectral theory to graph deep learning.Part II presents the sequential decision making problems where the graph serves as data and our proposed algorithm, GNN-TS. Chapter 3 introduces two online problems in which each round presents a graph and only bandit feedback is revealed. First, in online graph selection, actions are full graphs (e.g., molecules, program graphs); the learner selects a graph and observes a noisy payoff. This framing highlights the need for graph representations and calibrated exploration at decision time. Second, in online graph classification, each input is a graph and the learner must output a multi-class label with only action-dependent bandit feedback, linking the problem to multinomial logistic bandits over graph encodings. Chapter 4 presents the first project, graph neural Thompson Sampling, which pairs graph neural encoders with Thompson sampling as exploration rules. Theoretically, its performance is characterized via an effective-dimension parameter of a graph neural tangent kernel, yielding sublinear regret of order O˜( ˜d T1/2 ).Part III presents the sequential decision making problems where the graph serves as structure and our contribution in novel algorithms and problem unification. Chapter 5 first introduces the problems that decisions are coupled by a known graph. A Laplacian-regularized linear unified view that fuses content features with structural smoothness is presented for this problem. The second bandit problem is under the multi-agent setting, with a set of wide applications in interactive systems (recommendation, advertising, personalization). The second project is detailed in Chapter 6. The Laplacian kernelized bandit algorithms are proposed by inducing a multi-user kernel and Gaussian process style posterior, with confidence bounds derived from a bias-noise decomposition and regret governed by an effective dimension. The proposals are applied into a generalized design of the gang-of-bandits problem and competitive in both preferred regime and the other regimes. Part IV introduces the future works and the conclusion on the study about sequential decision making with graph information. Chapter 7 presents the ongoing works and future investigation on this research topic. A novelty algorithm, GCN-Logistic bandit, is proposed as the ongoing project, for online graph classification with bandit feedback. A foundation work on random graph generation model in sequential decision making as well as the innovation for online recommendation with decision making on the item-user graph, are introduced as future works.
- 일반주제명
- Statistics
- 일반주제명
- Computer engineering
- 기타저자
- University of California, Los Angeles Statistics 0891
- 기본자료저록
- Dissertations Abstracts International. 87-03B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520260202105151
■006m o d
■007cr#unu||||||||
■020 ▼a9798293834754
■035 ▼a(MiAaPQ)AAI32242202
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a310
■1001 ▼aWu, Shuang.
■24510▼aGraph-Informed Sequential Decision Making
■260 ▼a[Sl]▼bUniversity of California, Los Angeles▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a165 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-03, Section: B.
■500 ▼aAdvisor: Amini, Arash A.
■5021 ▼aThesis (Ph.D.)--University of California, Los Angeles, 2025.
■520 ▼aThis dissertation studies graph-informed sequential decision making, where graphs enter the bandit problem either as data-actions, contexts, rewards-or as structure that couples decisions, observations and agents. Algorithms that leverage graph priors to accelerate learning under limited feedback are developed with comprehensive theoretical analysis in this work.Part I introduces the backgrounds of the models and concepts in both statistical sequential decision making and machine learning on graphs. Chapter 1 elucidates bandit problems and algorithms, while Chapter 2 introduces graph learning models, from graph spectral theory to graph deep learning.Part II presents the sequential decision making problems where the graph serves as data and our proposed algorithm, GNN-TS. Chapter 3 introduces two online problems in which each round presents a graph and only bandit feedback is revealed. First, in online graph selection, actions are full graphs (e.g., molecules, program graphs); the learner selects a graph and observes a noisy payoff. This framing highlights the need for graph representations and calibrated exploration at decision time. Second, in online graph classification, each input is a graph and the learner must output a multi-class label with only action-dependent bandit feedback, linking the problem to multinomial logistic bandits over graph encodings. Chapter 4 presents the first project, graph neural Thompson Sampling, which pairs graph neural encoders with Thompson sampling as exploration rules. Theoretically, its performance is characterized via an effective-dimension parameter of a graph neural tangent kernel, yielding sublinear regret of order O˜( ˜d T1/2 ).Part III presents the sequential decision making problems where the graph serves as structure and our contribution in novel algorithms and problem unification. Chapter 5 first introduces the problems that decisions are coupled by a known graph. A Laplacian-regularized linear unified view that fuses content features with structural smoothness is presented for this problem. The second bandit problem is under the multi-agent setting, with a set of wide applications in interactive systems (recommendation, advertising, personalization). The second project is detailed in Chapter 6. The Laplacian kernelized bandit algorithms are proposed by inducing a multi-user kernel and Gaussian process style posterior, with confidence bounds derived from a bias-noise decomposition and regret governed by an effective dimension. The proposals are applied into a generalized design of the gang-of-bandits problem and competitive in both preferred regime and the other regimes. Part IV introduces the future works and the conclusion on the study about sequential decision making with graph information. Chapter 7 presents the ongoing works and future investigation on this research topic. A novelty algorithm, GCN-Logistic bandit, is proposed as the ongoing project, for online graph classification with bandit feedback. A foundation work on random graph generation model in sequential decision making as well as the innovation for online recommendation with decision making on the item-user graph, are introduced as future works.
■590 ▼aSchool code: 0031.
■650 4▼aStatistics
■650 4▼aComputer engineering
■653 ▼aMachine learning with graphs
■653 ▼aSequential decision making
■653 ▼aLaplacian kernelized bandit algorithms
■690 ▼a0463
■690 ▼a0464
■690 ▼a0800
■71020▼aUniversity of California, Los Angeles▼bStatistics 0891.
■7730 ▼tDissertations Abstracts International▼g87-03B.
■790 ▼a0031
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17359640▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


