Finding the absolute and vertex center of a fuzzy tree
The p-center problem is the problem of finding p best places on a network to locate facilities for providing customers' demands such that the maximum distance between the demand points and facilities is minimized. If these facilities are located on the edges and vertices of the network, the problem is called the absolute p-center problem. Whereas, if the facilities can just be located on the vertices, the problem is called the vertex p-center problem. In this paper, both absolute and vertex 1-center problems are studied on tree graphs, where the lengths of edges are fuzzy numbers. Based on some presented properties, fuzzy algorithms are proposed for finding absolute and vertex center of a fuzzy tree. The performance of presented algorithms are shown by solving some numerical examples. is considered and the absolute center problem and the vertex center problem are studied, respectively. Also, the weights of all vertices are equal to one and the lengths of edges are fuzzy numbers. Based on some presented properties, fuzzy algorithms are proposed for finding the absolute center and vertex center of a fuzzy tree. The performance of the authors' presented algorithm is shown by solving two numerical examples. Also, to illustrate the applicability and efficiency of the presented algorithm, a real life example is solved.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/19427867
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Supplemental Notes:
- © 2021 Informa UK Limited, trading as Taylor & Francis Group. Abstract reprinted with permission of Taylor & Francis.
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Authors:
- Taleshian, Fatemeh
- Fathali, Jafar
- Allah Taghi-Nezhad, Nemat
- Publication Date: 2022-7
Language
- English
Media Info
- Media Type: Web
- Features: References;
- Pagination: pp 591-599
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Serial:
- Transportation Letters: The International Journal of Transportation Research
- Volume: 14
- Issue Number: 6
- Publisher: Taylor & Francis
- ISSN: 1942-7867
- EISSN: 1942-7875
- Serial URL: http://www.tandfonline.com/toc/ytrl20/current
Subject/Index Terms
- TRT Terms: Algorithms; Customer satisfaction; Facilities; Fuzzy logic; Location; Networks; Optimization
- Subject Areas: Freight Transportation; Operations and Traffic Management; Planning and Forecasting; Terminals and Facilities;
Filing Info
- Accession Number: 01853928
- Record Type: Publication
- Files: TRIS
- Created Date: Aug 4 2022 5:18PM