Focusing on the Difference between day and night
This article aims to identify spatial patterns of human activity in the context of land use. Within commercial districts in Seoul, compared to those highly populated places only during the day, areas where people gather at nighttime are distinguished from the others.
Based on location-based population data collected by individuals from smartphone signal, k-means clustering is used to group a pattern of population distribution in 24-hour range. This separated the area where people flocked during the day from nocturnal hot spots.
As a result, the spatial distribution of people in Seoul shows some significant difference between day and night. The areas where the floating population is dominantly concentrated at night have distinctive features consist of vibrant streets with multi-land use. It was found that the degree of mixed land use is higher in the area where people at night compared to general commercial zones with low land use mix.
Furthermore, the influence of specific land use is more significant on the increase of the floating population than the other land use.
It implies that the proper degree of mixed land use attracts more people to commercial districts, even in the night, thereby enhancing the vitality of the streets.