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Predictive Modeling of Spatio-Temporal Datasets in High Dimensions- [electronic resource]
Predictive Modeling of Spatio-Temporal Datasets in High Dimensions- [electronic resource]
상세정보
- 자료유형
- 학위논문(국외)
- 자관 청구기호
- 기본표목-개인명
- 표제와 책임표시사항
- Predictive Modeling of Spatio-Temporal Datasets in High Dimensions - [electronic resource] / Chen, Linchao.
- 발행, 배포, 간사 사항
- 발행, 배포, 간사 사항
- 형태사항
- 1 online resource(148 p)
- 일반주기
- Source: Dissertation Abstracts International, Volume: 78-10(E), Section: B.
- 일반주기
- Advisers: Mark Berliner; Christopher Hans.
- 학위논문주기
- Thesis (Ph.D.)--The Ohio State University, 2015.
- 요약 등 주기
- 요약Spatio-temporal datasets in many research areas may be very high-dimensional and have complicated dependence structures in both space and time. Various dimension reduction techniques have been introduced to extract key information from single or multiple datasets. Standard dimension-reduced Bayesian hierarchical modeling approaches use a few spatial basis functions to capture the spatial structure and model temporal dynamics through their coefficients. However, these approaches are not always satisfactory in predictive modeling of complicated systems. It is challenging to build statistical models that are computationally efficient for very large datasets and able to adequately model the dependence structure.
- 요약 등 주기
- 요약In this dissertation, we focus on developing modeling strategies for high-dimensional spatio-temporal datasets in the context of predictive modeling, especially when standard dimension reduction methods do not perform well. We discuss modeling strategies to synthesize multiple high-dimensional information sources and produce accurate predictions. We consider the sea surface temperature (SST) prediction problem of Berliner et al. [2000] and demonstrate challenges and advantages of incorporating high-dimensional climate model output along with temperature observations to improve predictive accuracy. Furthermore, we develop a two-scale modeling strategy for dimension-reduced modeling. This modeling strategy is able to capture both large-scale and local dynamics using a large-scale component derived from standard dimension reduction techniques and a local component customized for each pre-partitioned subregion. Empirical experiments show that this strategy is more efficient in capturing variability when standard dimension reduction methods do not perform well. It delivers more balanced results in the presence of outliers. We also discuss its potential as a spatially varying modeling approach. Finally, we gather examples of how one can use coarse scale information in dimension reduction, EOF analysis, predictive modeling, generation of partitions, and provide discussion on potential strategies to choose appropriate aggregation scales.
- 주제명부출표목-일반주제명
- 부출표목-단체명
- 기본자료저록
- Dissertation Abstracts International. 78-10B(E).
- 기본자료저록
- Dissertation Abstract International
- 전자적 위치 및 접속
- 원문정보보기
- 소장사항
-
20180515 2018
MARC
008180601s2015 us esm 001c eng■001MOKWON01258113
■00520180518094333
■007cr
■020 ▼a9781369838763
■035 ▼a(MiAaPQ)AAI10610143
■035 ▼a(MiAaPQ)OhioLINK:osu1429586479
■040 ▼aMiAaPQ▼cMiAaPQ
■090 ▼a전자도서(박사논문)
■1001 ▼aChen, Linchao.
■24510▼aPredictive Modeling of Spatio-Temporal Datasets in High Dimensions▼h[electronic resource]▼cChen, Linchao.
■260 ▼a[Sl]▼bThe Ohio State University▼c2015
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2015
■300 ▼a1 online resource(148 p)
■500 ▼aSource: Dissertation Abstracts International, Volume: 78-10(E), Section: B.
■500 ▼aAdvisers: Mark Berliner; Christopher Hans.
■5021 ▼aThesis (Ph.D.)--The Ohio State University, 2015.
■520 ▼aSpatio-temporal datasets in many research areas may be very high-dimensional and have complicated dependence structures in both space and time. Various dimension reduction techniques have been introduced to extract key information from single or multiple datasets. Standard dimension-reduced Bayesian hierarchical modeling approaches use a few spatial basis functions to capture the spatial structure and model temporal dynamics through their coefficients. However, these approaches are not always satisfactory in predictive modeling of complicated systems. It is challenging to build statistical models that are computationally efficient for very large datasets and able to adequately model the dependence structure.
■520 ▼aIn this dissertation, we focus on developing modeling strategies for high-dimensional spatio-temporal datasets in the context of predictive modeling, especially when standard dimension reduction methods do not perform well. We discuss modeling strategies to synthesize multiple high-dimensional information sources and produce accurate predictions. We consider the sea surface temperature (SST) prediction problem of Berliner et al. [2000] and demonstrate challenges and advantages of incorporating high-dimensional climate model output along with temperature observations to improve predictive accuracy. Furthermore, we develop a two-scale modeling strategy for dimension-reduced modeling. This modeling strategy is able to capture both large-scale and local dynamics using a large-scale component derived from standard dimension reduction techniques and a local component customized for each pre-partitioned subregion. Empirical experiments show that this strategy is more efficient in capturing variability when standard dimension reduction methods do not perform well. It delivers more balanced results in the presence of outliers. We also discuss its potential as a spatially varying modeling approach. Finally, we gather examples of how one can use coarse scale information in dimension reduction, EOF analysis, predictive modeling, generation of partitions, and provide discussion on potential strategies to choose appropriate aggregation scales.
■590 ▼aSchool code: 0168.
■650 4▼aStatistics
■690 ▼a0463
■71020▼aThe Ohio State University▼bStatistics.
■7730 ▼tDissertation Abstracts International▼g78-10B(E).
■773 ▼tDissertation Abstract International
■790 ▼a0168
■791 ▼aPh.D.
■792 ▼a2015
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T14823742▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
■980 ▼a20180515▼f2018
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