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Improved Hierarchical Aggregation Methods for Functional Regionalization in the Seoul Metropolitan Area

  • Journal of the Korean Cartographic Association
  • Abbr : JKCA
  • 2012, 12(2), pp.25-35
  • Publisher : The Korean Cartographic Association
  • Research Area : Social Science > Geography > Geography in general > Cartography

Hyeongmo Koo 1

1서울대학교

Accredited

ABSTRACT

Functional regionalization using commuting data is a significant task in identifying the structure of urban areas. However, conventional methods, especially Intramax, are inadequate in optimizing functional connections between spatial units. Therefore, this paper aims to introduce alternative methods in delineating the commuting zones by incorporating an improved measurement for increasing internal flows and spatial components such as contiguity constraint and area balance constraint. Alternative algorithms are applied to the Seoul Metropolitan Area (SMA) to identify functional regions. Different functional zones generated by alternative methods are evaluated by the comparative assessment of the effects of the improved measurement and the spatial components. As a result, the new methods outperform the scores of the proportion of internal flows from Intramax, and the commuting zones generated through new methods are geographically reasonable across SMA.

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