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A spatial fuzzy influence diagram for modelling spatial objects dependencies : a case study on tree-related electricity outages

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IJGIS_FuzzySpatialInfluenceDiagram_Accepted.pdf (2.190Mb)
Date
2018
Author
Zhang, Zhe
Demšar, Urška
Wang, Shaowen
Virrantaus, Kirsi
Keywords
Influence diagram
Spatial fuzzy influence diagram
Critical infrastructure
Tree-related electric outages
Fuzzy logic
G Geography (General)
NDAS
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Abstract
Spatial objects can be interconnected and mutually dependent in complex ways. In Geographical Information Science, spatial objects’ topological relationships are not discussed together with their attributes’ dependencies, and the vagueness of spatial objects is often ignored during the spatial modelling process. To address this, a spatial fuzzy influence diagram (SFID) is introduced. Compared to the traditional statistical or fuzzy modelling approach, the influence diagram brings advantages in helping decision-makers structure complex interdependency problems. A questionnaire was developed to evaluate the applicability of using an influence diagram in modelling spatial objects’ dependencies. As a case study, an SFID is applied to tree-related electric outages. The result of the case study is represented as a vulnerability map of electrical networks. The map shows areas at risk due to tree-related electric outages. The results were first validated by using a visual comparison of the vulnerability map and electricity fault data. In the second validation step, the percentage of fault data, which has received values in different vulnerability categories, was calculated. The results of the case study can be used to support the decision-making process of electrical network maintenance and planning.
Citation
Zhang , Z , Demšar , U , Wang , S & Virrantaus , K 2018 , ' A spatial fuzzy influence diagram for modelling spatial objects dependencies : a case study on tree-related electricity outages ' , International Journal of Geographical Information Science , vol. 32 , no. 2 , pp. 349-366 . https://doi.org/10.1080/13658816.2017.1385789
Publication
International Journal of Geographical Information Science
Status
Peer reviewed
DOI
https://doi.org/10.1080/13658816.2017.1385789
ISSN
1365-8816
Type
Journal article
Rights
© 2017 Informa UK Limited, trading as Taylor & Francis Group. This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1080/13658816.2017.1385789
Description
We would like to acknowledge the National Emergency Supply Agency of Finland for funding this research. This material is also based in part upon work supported by the U.S. National Science Foundation under grant numbers [1047916 and 1443080]. The National Emergency Supply Agency of Finland funded the Alvar project. This article is the research outcome of the Alvar project.
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  • University of St Andrews Research
URL
http://www.tandfonline.com/doi/full/10.1080/13658816.2017.1385789#supplemental-material-section
URI
http://hdl.handle.net/10023/16183

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