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Quasi-Sparsity Based Origin-Destination Demand Estimation- [electronic resource]
Quasi-Sparsity Based Origin-Destination Demand Estimation - [electronic resource]
Contents Info
Quasi-Sparsity Based Origin-Destination Demand Estimation- [electronic resource]
Material Type  
 단행본
 
0016934799
Date and Time of Latest Transaction  
20240214101655
ISBN  
9798380327695
DDC  
385
Author  
Wang, Jingxing.
Title/Author  
Quasi-Sparsity Based Origin-Destination Demand Estimation - [electronic resource]
Publish Info  
[S.l.]: : University of Washington., 2023
Publish Info  
Ann Arbor : : ProQuest Dissertations & Theses,, 2023
Material Info  
1 online resource(131 p.)
General Note  
Source: Dissertations Abstracts International, Volume: 85-03, Section: B.
General Note  
Advisor: Ban, Xuegang Jeff.
학위논문주기  
Thesis (Ph.D.)--University of Washington, 2023.
Restrictions on Access Note  
This item must not be sold to any third party vendors.
Abstracts/Etc  
요약A good knowledge of the Origin-Destination (OD) demand matrix has been always important in various transportation applications, including simulation studies, transportation planning, traffic operations and control, and etc. For a large real network, the OD demand matrix may have certain quasi-sparsity property, i.e., the majority of the OD pairs have small demands while only a small portion of OD pairs have large demands. Inspired by Compressed Sensing technique, this dissertation proposes a Quasi-Sparsity Origin-Destination (QSOD) framework to explore such quasi-sparsity property of large-scale OD demand matrices. Three QSOD models (the fixed-mapping QSOD model, the bi-level QSOD model, and the distributionally robust QSOD model) are established under such QSOD framework. The results theoretically and numerically demonstrate that under certain conditions the estimated OD demands will share the same quasi-sparsity with the prior OD demands, and the estimated demands of most OD pairs (of a large-size network) will be equal to their prior values or zeros (or a very small value). Such findings provide important practical insights for OD estimation: one may only require the prior OD demands can capture the relative magnitude of the true OD demands of the network, which makes it much easier to prepare prior OD matrix in practice. The comparison between QSOD models and other existing OS estimation studies, and the integration of multi-sourced data for OD estimation under the QSOD framework are also discussed in this study.
Subject Added Entry-Topical Term  
Transportation.
Subject Added Entry-Topical Term  
Civil engineering.
Index Term-Uncontrolled  
Quasi-sparsity property
Index Term-Uncontrolled  
Transportation network
Index Term-Uncontrolled  
Origin-Destination
Added Entry-Corporate Name  
University of Washington Civil and Environmental Engineering
Host Item Entry  
Dissertations Abstracts International. 85-03B.
Host Item Entry  
Dissertation Abstract International
Electronic Location and Access  
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소장사항  
202402 2024
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