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  4. Optimum. Economic Studies, 2024, nr 1(115)

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    • Proszę używać tego identyfikatora do cytowań lub wstaw link do tej pozycji: http://hdl.handle.net/11320/16384
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    Pole DCWartośćJęzyk
    dc.contributor.authorLandmesser‑Rusek, Joanna-
    dc.contributor.authorAndrzejak, Joanna-
    dc.date.accessioned2024-04-16T08:43:26Z-
    dc.date.available2024-04-16T08:43:26Z-
    dc.date.issued2024-
    dc.identifier.citationOptimum. Economic Studies, Nr 1(115) 2024, s. 26-44pl
    dc.identifier.issn1506-7637-
    dc.identifier.urihttp://hdl.handle.net/11320/16384-
    dc.description.abstractPurpose – The aim of this article was to assess the changes in the topological structure of the currency market caused by two crises: the COVID-19 pandemic in 2020 and Russia’s aggression against Ukraine in 2022. A network of major world currencies was analysed over three six-month sub-periods: the pandemic period 1.02–31.07.2020, the war period 1.02–31.07.2022 and the reference period 1.02–31.07.2021. Research method – We have used the dynamic time warping (DTW) method for comparing time series. DTW distances between pairs of individual currencies were calculated, and, based on them, minimum spanning trees (MST) were constructed, whose topological characteristics were analysed. Results – It turned out that the topological structure of the foreign exchange market varies in the sub-periods studied, and the analysed crises affected the currency network. In addition, the networks generated by the MST depend on the choice of base currency used to measure the value of all other currencies. Originality / value / implications / recommendations – The significance of the results obtained lies in providing a description of the topological structure of the market during the observed crises. The detected hierarchical structures can be useful in theoretical descriptions of currencies and in the search for economic factors affecting specific groups of countries.pl
    dc.description.sponsorshipArticle was supported by the Ministry of Science and Higher Education as part of a subsidy to maintain the research potential of the Institute of Economics and Finance, Warsaw University of Life Sciences.pl
    dc.language.isoenpl
    dc.publisherWydawnictwo Uniwersytetu w Białymstokupl
    dc.subjectforeign exchange marketpl
    dc.subjectminimum spanning treepl
    dc.subjectDTW distancepl
    dc.titleThe Topological Structure of the Global Foreign Exchange Market During Crises – Comparative Network Analysispl
    dc.typeArticlepl
    dc.rights.holder© Copyright by Uniwersytet w Białymstokupl
    dc.identifier.doi10.15290/oes.2024.01.115.02-
    dc.description.EmailJoanna Landmesser-Rusek: joanna_landmesser@sggw.edu.plpl
    dc.description.EmailJoanna Andrzejak: joanna_andrzejak@sggw.edu.plpl
    dc.description.AffiliationJoanna Landmesser-Rusek - Warsaw University of Life Sciencespl
    dc.description.AffiliationJoanna Andrzejak - Warsaw University of Life Sciencespl
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    dc.description.number1(115)pl
    dc.description.firstpage26pl
    dc.description.lastpage44pl
    dc.identifier.citation2Optimum. Economic Studiespl
    dc.identifier.orcid0000-0001-7286-8536-
    dc.identifier.orcid0000-0002-9598-844X-
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