대중교통 빅데이터를 활용한 도시활동 및 공간구조 모니터링에 관한 연구 - 서울시 스마트카드 자료의 활용과 위세중심성 지표를 중심으로

Abstract

This study examines the changes of urban activities and spatial structure using the smart card data recorded in March, 2011 and October, 2014. First, this study identified working trips and non-working trips from the smart card data since the data does not include trip purposes. Second, we investigated the correlation of the origin-destination matrix and the centrality index between weekdays and weekends. In this process, we applied a 1km×1km grid unit because the administrative units were not appropriate for analyzing the smart card data. Third, we analyzed the degree of polycentricity and its dynamic changes from 2011 to 2014 in Seoul based on working trips and non-working trips. Lastly, we examined the determinant factors of the degree of centrality and its dynamic changes over time. The results confirmed that there has been changes in travel pattern and the spatial structure between 2011 and 2014. Moreover, the results indicated that the spatial structure of Seoul has been transformed towards polycentricity since 2011. In addition, the prestige centrality and its increase were associated with large-scale department stores or commercial complex facilities. The findings of this study indicate that large-scale commercial and business facilities and public transportation infrastructures are highly associated with the degree of prestige centrality and its changes.