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Decoupling Compression and Demixing: A Modular Penalized Matrix Decomposition Framework for Calcium and Voltage Imaging Data
Decoupling Compression and Demixing: A Modular Penalized Matrix Decomposition Framework for Calcium and Voltage Imaging Data
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202105200
- ISBN
- 9798297617247
- DDC
- 310
- 서명/저자
- Decoupling Compression and Demixing: A Modular Penalized Matrix Decomposition Framework for Calcium and Voltage Imaging Data
- 발행사항
- [Sl] : Columbia University, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 221 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-04, Section: B.
- 주기사항
- Advisor: Paninski, Liam.
- 학위논문주기
- Thesis (Ph.D.)--Columbia University, 2025.
- 초록/해제
- 요약Calcium and voltage imaging produce high-dimensional fluorescence movies in which neural activity must be recovered from low-SNR measurements and is often obscured by structured backgrounds and acquisition artifacts. The objective is to recover and demix signals attributable to distinct sources. Most pipelines attempt this in a single stage; in practice, joint formulations are sensitive to initialization and hyperparameters and are computationally demanding. This thesis develops a modular alternative: perform compression and denoising first to obtain a compact, noise-reduced representation, and then demix on that representation.First, the thesis introduces a patch-wise Penalized Matrix Decomposition (PMD) that constructs a structured, low-rank representation aligned with characteristics shared across modalities, without requiring modality-specific assumptions. Framing the initial stage as signal approximation rather than source separation yields robust compression and denoising without parameter tuning and compares favorably with standard dimensionality reduction baselines. This positions PMD as a general-purpose tool and a foundation from which to revisit the design of demixing.Second, the thesis turns to demixing through targeted case studies, using the PMD representation as the substrate for redesigned, modality-adapted algorithms. Working directly in the compressed space improves conditioning, enables more stable and data-driven initialization, and reduces computational cost. These designs are translated into usable software and reproducible pipelines, and deployed in collaborative settings, illustrating how the modular framework supports scalable, routine analysis.
- 일반주제명
- Statistics
- 일반주제명
- Neurosciences
- 일반주제명
- Computer science
- 일반주제명
- Medical imaging
- 키워드
- Calcium imaging
- 키워드
- Machine learning
- 키워드
- Voltage imaging
- 키워드
- Neural activity
- 기타저자
- Columbia University Statistics
- 기본자료저록
- Dissertations Abstracts International. 87-04B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■020 ▼a9798297617247
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■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a310
■1001 ▼aKinsella, Ian August.
■24510▼aDecoupling Compression and Demixing: A Modular Penalized Matrix Decomposition Framework for Calcium and Voltage Imaging Data
■260 ▼a[Sl]▼bColumbia University▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a221 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-04, Section: B.
■500 ▼aAdvisor: Paninski, Liam.
■5021 ▼aThesis (Ph.D.)--Columbia University, 2025.
■520 ▼aCalcium and voltage imaging produce high-dimensional fluorescence movies in which neural activity must be recovered from low-SNR measurements and is often obscured by structured backgrounds and acquisition artifacts. The objective is to recover and demix signals attributable to distinct sources. Most pipelines attempt this in a single stage; in practice, joint formulations are sensitive to initialization and hyperparameters and are computationally demanding. This thesis develops a modular alternative: perform compression and denoising first to obtain a compact, noise-reduced representation, and then demix on that representation.First, the thesis introduces a patch-wise Penalized Matrix Decomposition (PMD) that constructs a structured, low-rank representation aligned with characteristics shared across modalities, without requiring modality-specific assumptions. Framing the initial stage as signal approximation rather than source separation yields robust compression and denoising without parameter tuning and compares favorably with standard dimensionality reduction baselines. This positions PMD as a general-purpose tool and a foundation from which to revisit the design of demixing.Second, the thesis turns to demixing through targeted case studies, using the PMD representation as the substrate for redesigned, modality-adapted algorithms. Working directly in the compressed space improves conditioning, enables more stable and data-driven initialization, and reduces computational cost. These designs are translated into usable software and reproducible pipelines, and deployed in collaborative settings, illustrating how the modular framework supports scalable, routine analysis.
■590 ▼aSchool code: 0054.
■650 4▼aStatistics
■650 4▼aNeurosciences
■650 4▼aComputer science
■650 4▼aMedical imaging
■653 ▼aCalcium imaging
■653 ▼aMachine learning
■653 ▼aMatrix factorization
■653 ▼aVoltage imaging
■653 ▼aNeural activity
■690 ▼a0463
■690 ▼a0317
■690 ▼a0984
■690 ▼a0574
■690 ▼a0800
■71020▼aColumbia University▼bStatistics.
■7730 ▼tDissertations Abstracts International▼g87-04B.
■790 ▼a0054
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17359701▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


