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I-index for quantifying an urban location's irreplaceability
Wang, Xi1,2; Chen, Jie1; Pei, Tao1,2,3; Song, Ci1,2; Liu, Yaxi1,2; Shu, Hua1,2; Guo, Sihui1,2; Chen, Xiao1,2
2021-11-01
Source PublicationCOMPUTERS ENVIRONMENT AND URBAN SYSTEMS
ISSN0198-9715
Volume90Pages:13
Corresponding AuthorPei, Tao(peit@lreis.ac.cn)
AbstractA location's irreplaceability refers to the degree of difficulty with which it can be replaced by other locations. For example, the irreplaceability of airports, hospitals, and ATMs varies, and that between hospitals is also different. They differ in both the number of users and the extent of service area. Quantifying the location's irreplaceability provides guidance for urban planning, such as siting of public resources. Existing methods for quantifying an urban location's irreplaceability do not consider human activity at the location, therefore the revealed irreplaceability may deviate from the resident's perceptions. To address this issue, we use origin-destination flows to reflect human activity. We propose a flow-based locational measure, I-index, to quantify the location's irreplaceability. It can be viewed as 'H-index of flow' where we regard locations as scientists, flows as papers. I-index of a location is the maximum value of i such that at least i flows with a length of at least alpha* i meters have reached this location, where a is the conversion factor that can be determined adaptively from the flow dataset. I-index elegantly combines the flow volume and length into a single value. The effectiveness of the I-index is validated by simulation experiments. Two case studies show that the hospital's irreplaceability strongly correlates with the hospital bypass behavior and locations with strongly mixed urban functions are more irreplaceable. The implications for urban planning are further discussed.
KeywordLocational measure Irreplaceability Origin-destination flow Flow mapping H-index
DOI10.1016/j.compenvurbsys.2021.101711
WOS KeywordLAND-USE ; FLOWS ; TRANSPORT ; PATTERNS ; ACCESSIBILITY ; DYNAMICS ; MOBILITY ; DISTANCE ; CHOICE
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41525004] ; National Natural Science Foundation of China[42071436] ; National Key Research and Development Program of China[2017YFB0503604]
Funding OrganizationNational Natural Science Foundation of China ; National Key Research and Development Program of China
WOS Research AreaComputer Science ; Engineering ; Environmental Sciences & Ecology ; Geography ; Operations Research & Management Science ; Public Administration
WOS SubjectComputer Science, Interdisciplinary Applications ; Engineering, Environmental ; Environmental Studies ; Geography ; Operations Research & Management Science ; Regional & Urban Planning
WOS IDWOS:000702393800015
PublisherELSEVIER SCI LTD
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Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/166004
Collection中国科学院地理科学与资源研究所
Corresponding AuthorPei, Tao
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Jiangsu Ctr Collaborat Innovat Geog Informat Reso, Nanjing 210023, Peoples R China
Recommended Citation
GB/T 7714
Wang, Xi,Chen, Jie,Pei, Tao,et al. I-index for quantifying an urban location's irreplaceability[J]. COMPUTERS ENVIRONMENT AND URBAN SYSTEMS,2021,90:13.
APA Wang, Xi.,Chen, Jie.,Pei, Tao.,Song, Ci.,Liu, Yaxi.,...&Chen, Xiao.(2021).I-index for quantifying an urban location's irreplaceability.COMPUTERS ENVIRONMENT AND URBAN SYSTEMS,90,13.
MLA Wang, Xi,et al."I-index for quantifying an urban location's irreplaceability".COMPUTERS ENVIRONMENT AND URBAN SYSTEMS 90(2021):13.
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