Measuring the Geometric and Semantic Similarity of Space–Time Prisms Using Temporal Signatures.
Well-established techniques exist for measuring the similarity of space–time paths. These measures support clustering and aggregation of space–time paths as well as moving objects database queries based on similar movement patterns or semantics. Little attention has been paid, however, to the analog...
| Publicado en: | Annals of the American Association of Geographers Vol. 109; no. 3; pp. 730 - 754 |
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| Autores principales: | , , |
| Formato: | Artículo |
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Taylor & Francis Ltd
May2019
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| Materias: | |
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ssf&AN=135909711&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 135909711 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 24694452 JRMH jtl: Annals of the American Association of Geographers issn: 24694452 maglogo: N pubinfo: dt: May2019 vid: 109 iid: 3 pid: 377 pub: Taylor & Francis Ltd artinfo: ui: 135909711 10.1080/24694452.2018.1484686 ppf: 730 ppct: 24 formats: tig: atl: Measuring the Geometric and Semantic Similarity of Space–Time Prisms Using Temporal Signatures. aug: au: Miller, Harvey J. Jaegal, Young Raubal, Martin affil: Department of Geography and Center for Urban and Regional Analysis, The Ohio State University Institute of Cartography and Geoinformation, Swiss Federal Institute of Technology (ETH) Zurich su: Semantics Socioeconomic factors Geometric analysis Spacetime Animal mechanics sug: subj: Semantics Socioeconomic factors Geometric analysis Spacetime Animal mechanics keyword: 几何相似性 时空稜柱 语义相似性 geometric similarity prisma del espacio–tiempo semantic similarity similitud geométrica similitud semántica space–time prism prisma del espacio–tiempo similitud geométrica similitud semántica 几何相似性 时空稜柱 语义相似性 几何相似性 时空稜柱 语义相似性 geometric similarity prisma del espacio–tiempo semantic similarity similitud geométrica similitud semántica space–time prism prisma del espacio–tiempo similitud geométrica similitud semántica 几何相似性 时空稜柱 语义相似性 ab: Well-established techniques exist for measuring the similarity of space–time paths. These measures support clustering and aggregation of space–time paths as well as moving objects database queries based on similar movement patterns or semantics. Little attention has been paid, however, to the analogous problem of measuring space–time prism (STP) similarity, despite comparable applications. This article presents and evaluates a method for measuring STP similarity through dimensionality reduction that leverages their inherent temporal ordering. The technique sweeps an STP along the time axis and derives one-dimensional temporal signatures based on a measured STP property that captures its geometry or semantics. These temporal signatures can be visualized directly as curves. We can also apply existing space–time path similarity measures to these signatures. To demonstrate the feasibility of this approach, we perform two sets of experiments measuring geometric and semantic similarity among STPs and assess the information within these curves using visualization, Fréchet distances, and clustering techniques. Results suggest that the temporal signature curves capture meaningful similarities and differences among STPs. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
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