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Waldemar Ratajczak

Principal components analysis (PCA)
1993 · Andrzej Maćkiewicz, Waldemar Ratajczak · Computers & Geosciences · 1,897
Towards a new definition of topological accessibility
1996 · Andrzej Maćkiewicz, Waldemar Ratajczak · Transportation Research Part B Methodological · 57
Gravitational Analysis in Regional Science and Spatial Economics: A Vector Gradient Approach to Trade
2020 · Peter Nijkamp, Waldemar Ratajczak · International Regional Science Review · 37
Spatio-temporal principal component analysis
2023 · Mirosław Krzyśko, Peter Nijkamp, et al. · Spatial Economic Analysis · 31
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Basins of attraction around large cities - A study of urban interaction spaces in Europe
2021 · Michal Dziecielski, Karima Kourtit, et al. · Cities · 20
Self-Organisation in Spatial Systems—From Fractal Chaos to Regular Patterns and Vice Versa
2015 · Michal Banaszak, Michal Dziecielski, et al. · PLoS ONE · 19
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The Spatial Economy: A Holistic Perspective
2014 · Peter Nijkamp, Waldemar Ratajczak · Springer eBooks · 17
An Extension of the Classical Distance Correlation Coefficient for Multivariate Functional Data with Applications
2016 · Tomasz Górecki, Mirosław Krzyśko, et al. · Statistics in Transition New Series · 16
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A novel Spatio-temporal principal component analysis based on Geary's contiguity ratio
2023 · Mirosław Krzyśko, Peter Nijkamp, et al. · Computers Environment and Urban Systems · 9
Multidimensional economic indicators and multivariate functional principal component analysis (MFPCA) in a comparative study of countries’ competitiveness
2021 · Mirosław Krzyśko, Peter Nijkamp, et al. · Journal of Geographical Systems · 9
Geography in motion: Hexagonal spatial systems in fuzzy gravitation
2018 · Michał Banaszak, Michał Dziecielski, et al. · Environment and Planning A Economy and Space · 9
Fractal dimension complexity of gravitation fractals in central place theory
2023 · Michał Banaszak, Krzysztof Górnisiewicz, et al. · Scientific Reports · 6
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Sustainable Development of Polish Macroregions—Study by Means of the Kernel Discriminant Coordinates Method
2020 · Mirosław Krzyśko, Waldemar Wołyński, et al. · International Journal of Environmental Research and Public Health · 6
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Analiza nieliniowych składowych głównych dla danych czasowo‑przestrzennych geograficznie ważonych
2018 · Mirosław Krzyśko, Wojciech Łukaszonek, et al. · Acta Universitatis Lodziensis Folia oeconomica · 4
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Competitiveness of Polish regions and eco-development
2007 · Waldemar Ratajczak, Adam Mickiewicz · 4
Economic hierarchical spatial systems – new properties of Löschian numbers
2023 · Jerzy Kaczorowski, Waldemar Ratajczak, et al. · Applied Mathematics and Computation · 3
Dostepnosc komunikacyjna miast wojewodzkich Polski w latach 1948-1988
1992 · Waldemar Ratajczak · 3
Measuring the similarity of charts in graphical statistics
2024 · Krzysztof Górnisiewicz, Zbigniew Palka, et al. · Scientific Reports · 1
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Dynamic Sustainability: Back to History to Advocate for Small- and Medium-Sized Towns
2021 · Teresa de Noronha, Eric Vaz, et al. · New frontiers in regional science: Asian perspectives · 1
Geografia współwystępowania wypadków drogowych: kolokacja zdarzeń w czasie i przestrzeni – studium przypadku Warszawy i Chicago
2026 · Mirosław Krzyśko, Marcin Krzyśko, et al. · Rozwój Regionalny i Polityka Regionalna
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Fractal dimension complexity of gravitational fractals based on hexagonal and square lattices: Christaller and Lösch revisited
2026 · Michał Banaszak, Krzysztof Górnisiewicz, et al. · Letters in Spatial and Resource Sciences
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The Use of the Getis-Ord Index in a Spatio-temporal Principal Component Analysis of Interdependent Spatial systems
2026 · Mirosław Krzyśko, Andrzej Wojtyła, et al. · Networks and Spatial Economics
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Fractal dimension complexity of gravitational fractals based on hexagonal and square lattices: Christaller and Lösch revisited.
2026 · Górnisiewicz, Krzysztof, Ratajczak, Waldemar, et al. · Zenodo (CERN European Organization for Nuclear Research)
Digital Well – Being w dziedzinie prowadzenia konsultacji społecznych na szczeblu lokalnym
2023 · Marek Szewczyk, Waldemar Ratajczak
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Fractal Dimension Complexity of Gravitation Fractals in Central Place Theory
2022 · Banaszak, Michał, Górnisiewicz, Krzysztof, et al. · Zenodo (CERN European Organization for Nuclear Research)
Works count: 39
Citation count: 2,149
H-index: 9
I10-index: 8
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