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http://dx.doi.org/10.7848/ksgpc.2019.37.1.29

Accessibility Analysis Method based on Public Facility Attraction Index Using SNS Data  

Lee, Ji Won (Dept. of Civil and Environmental Engineering, Seoul National University)
Yu, Ki Yun (Dept. of Civil and Environmental Engineering, Seoul National University)
Kim, Ji Young (Institute of Construction and Environmental Engineering, Seoul National University)
Publication Information
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography / v.37, no.1, 2019 , pp. 29-42 More about this Journal
Abstract
In order to expand the qualitative aspects of public facility, this study used SNS data to derive user-oriented preference factors for public facilities and then were quantified in terms of supply side and demand side. To derive preference factor, LDA, one of topic modeling, was used and attraction index was calculated for each facility. In addition we analyzed spatial accessibility to measure the degree of service experience of users by using 2SFCA model. The study area covered public libraries of Seoul, Korea. As a result of study, five topics were extracted as preference factors for the public library: Circumstance, Scale of facility, Cultural program, Parenting, Books and materials. In particular topic of circumstance and parenting were newly derived preference factors unknown in previous studies. As a result of calculating attraction index for each library, the index of Songpa Library, Jungdok Library, and Namsan Library was high. Songpa library has received good evaluation in parenting factor, and Jungdok & Namsan library in circumstance factor. The accessibility of each region seems to better in center of Seoul where public libraries are crowded, but shrinking toward the outskirts. We expect that the proposed method will contribute to user-oriented public facility evaluation and policy decision making.
Keywords
Social Network Service Data; Latent Dirichlet Allocation(LDA); Attraction Index of Public Facility; Spatial Accessibility; 2-Step Floating Catchment Area(2SFCA);
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Times Cited By KSCI : 3  (Citation Analysis)
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