The Journal of Society for e-Business Studies (한국전자거래학회지)

Society for e-Business Studies (한국전자거래학회)
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Metro Station Clustering based on Travel-Time Distributions

통행시간 분포 기반의 전철역 클러스터링

  • Gong, InTaek (Procurement DX Team, LG CNS) ;
  • Kim, DongYun (Graduate School of Logistics, Incheon National University) ;
  • Min, Yunhong (Graduate School of Logistics, Incheon National University)
  • Received : 2022.04.18
  • Accepted : 2022.04.28
  • Published : 2022.05.31
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Abstract

Smart card data is representative mobility data and can be used for policy development by analyzing public transportation usage behavior. This paper deals with the problem of classifying metro stations using metro usage patterns as one of these studies. Since the previous papers dealing with clustering of metro stations only considered traffic among usage behaviors, this paper proposes clustering considering traffic time as one of the complementary methods. Passengers at each station were classified into passengers arriving at work time, arriving at quitting time, leaving at work time, and leaving at quitting time, and then the estimated shape parameter was defined as the characteristic value of the station by modeling each transit time to Weibull distribution. And the characteristic vectors were clustered using the K-means clustering technique. As a result of the experiment, it was observed that station clustering considering pass time is not only similar to the clustering results of previous studies, but also enables more granular clustering.

스마트교통카드 데이터는 대표적인 모빌리티 데이터로 이를 이용하여 대중교통 이용행태를 분석하고 정책 개발에 활용할 수 있다. 본 논문은 이러한 연구의 하나로 전철 이용패턴을 이용하여 전철역들을 분류하는 문제를 다룬다. 전철역의 클러스터링을 다룬 기존 논문들은 이용행태 중 통행량만을 고려하였기에 본 논문은 이에 대한 보완적인 방법의 하나로 통행시간을 고려한 클러스터링을 제안한다. 각 역의 승객들을 출근 시간 출발, 출근 시간 도착, 퇴근 시간 출발, 퇴근 시간 도착 승객들로 분류한 다음 각각의 통행시간을 와이블 분포로 모형화하여 추정한 형상모수를 역의 특성값으로 정의하였다. 그리고 특성 벡터들을 K-평균 클러스터링 기법을 사용하여 클러스터링하였다. 실험결과 통행시간을 고려하여 역의 클러스터링을 수행하면 기존 연구의 클러스터링 결과와 유사한 결과가 나올 뿐만 아니라 더 세분화 된 클러스터링이 가능함을 관찰하였다.

Keywords

Acknowledgement

본 연구는 인천대학교 교내연구 (2019-0083)의 지원으로 수행되었음.

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