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Statistical Integrative Analysis of Genomic Data
Statistical Integrative Analysis of Genomic Data
Detailed Information
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202104802
- ISBN
- 9798291554265
- DDC
- 574
- 저자명
- Liu, Chuwen.
- 서명/저자
- Statistical Integrative Analysis of Genomic Data
- 발행사항
- [Sl] : The University of North Carolina at Chapel Hill, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 142 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-02, Section: B.
- 주기사항
- Advisor: Wu, Di;Zheng, Xiaojing.
- 학위논문주기
- Thesis (Ph.D.)--The University of North Carolina at Chapel Hill, 2025.
- 초록/해제
- 요약Understanding the association between phenotypes and multi-omics data has garnered growing interest. When multiple data sources are available, integrative analysis can enhance power and interpretation. In this dissertation, we develop three methods to assess such associations through joint modeling of different types of omics data.In Chapter 2, we propose a novel metric-the biological ratio of metatranscriptomics to metagenomics-to quantify relative activity in microbiome data. We introduce a Gaussian mixture regression model with hypothesis testing, applicable to both cross-sectional and longitudinal data. This framework addresses differential expression under the influence of metagenomic variation and employs a two-step strategy to link microbial taxa to disease. Our method shows strong Type I error control and competitive power in both simulations and real datasets.Chapter 3 introduces a joint Bayesian framework that integrates single-cell and bulk RNA-seq data to estimate cell-type-specific (CTS) differential expression. The model employs a negative binomial likelihood for bulk RNA-seq and a zero-inflated negative binomial for single-cell data. Parameters are estimated via Hamiltonian Monte Carlo, and posterior p-values are used for CTS-DE inference. We demonstrate improved accuracy through simulations and apply the method to paired COVID-19 bulk and single-cell RNA-seq data, identifying novel CTS-differential genes and pathways.Building on Chapter 2, Chapter 4 addresses the challenge of data sparsity in microbiome analysis by proposing a deep probabilistic imputation framework. Designed for paired metagenomic and metatranscriptomic data, the model explicitly handles zero inflation and overdispersion using zero-inflated negative binomial distributions. It incorporates modality-specific encoders and a probabilistic canonical correlation layer to infer shared and private latent spaces. This end-to-end framework not only improves data recovery but also enhances downstream analyses such as differential abundance detection.
- 일반주제명
- Biostatistics
- 일반주제명
- Bioinformatics
- 일반주제명
- Molecular biology
- 일반주제명
- Genetics
- 키워드
- Genomic data
- 키워드
- Microbiomes
- 기타저자
- The University of North Carolina at Chapel Hill Biostatistics
- 기본자료저록
- Dissertations Abstracts International. 87-02B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
008260126s2025 us c eng d■001000017358862
■00520260202104802
■006m o d
■007cr#unu||||||||
■020 ▼a9798291554265
■035 ▼a(MiAaPQ)AAI32164693
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a574
■1001 ▼aLiu, Chuwen.
■24510▼aStatistical Integrative Analysis of Genomic Data
■260 ▼a[Sl]▼bThe University of North Carolina at Chapel Hill▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a142 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-02, Section: B.
■500 ▼aAdvisor: Wu, Di;Zheng, Xiaojing.
■5021 ▼aThesis (Ph.D.)--The University of North Carolina at Chapel Hill, 2025.
■520 ▼aUnderstanding the association between phenotypes and multi-omics data has garnered growing interest. When multiple data sources are available, integrative analysis can enhance power and interpretation. In this dissertation, we develop three methods to assess such associations through joint modeling of different types of omics data.In Chapter 2, we propose a novel metric-the biological ratio of metatranscriptomics to metagenomics-to quantify relative activity in microbiome data. We introduce a Gaussian mixture regression model with hypothesis testing, applicable to both cross-sectional and longitudinal data. This framework addresses differential expression under the influence of metagenomic variation and employs a two-step strategy to link microbial taxa to disease. Our method shows strong Type I error control and competitive power in both simulations and real datasets.Chapter 3 introduces a joint Bayesian framework that integrates single-cell and bulk RNA-seq data to estimate cell-type-specific (CTS) differential expression. The model employs a negative binomial likelihood for bulk RNA-seq and a zero-inflated negative binomial for single-cell data. Parameters are estimated via Hamiltonian Monte Carlo, and posterior p-values are used for CTS-DE inference. We demonstrate improved accuracy through simulations and apply the method to paired COVID-19 bulk and single-cell RNA-seq data, identifying novel CTS-differential genes and pathways.Building on Chapter 2, Chapter 4 addresses the challenge of data sparsity in microbiome analysis by proposing a deep probabilistic imputation framework. Designed for paired metagenomic and metatranscriptomic data, the model explicitly handles zero inflation and overdispersion using zero-inflated negative binomial distributions. It incorporates modality-specific encoders and a probabilistic canonical correlation layer to infer shared and private latent spaces. This end-to-end framework not only improves data recovery but also enhances downstream analyses such as differential abundance detection.
■590 ▼aSchool code: 0153.
■650 4▼aBiostatistics
■650 4▼aBioinformatics
■650 4▼aMolecular biology
■650 4▼aGenetics
■653 ▼aGenomic data
■653 ▼aMetatranscriptomics
■653 ▼aCell-type-specific
■653 ▼aDifferential expression
■653 ▼aMicrobiomes
■690 ▼a0308
■690 ▼a0369
■690 ▼a0307
■690 ▼a0715
■71020▼aThe University of North Carolina at Chapel Hill▼bBiostatistics.
■7730 ▼tDissertations Abstracts International▼g87-02B.
■790 ▼a0153
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17358862▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
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