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http://dx.doi.org/10.22640/lxsiri.2018.48.2.79

A Suggestion for Spatiotemporal Analysis Model of Complaints on Officially Assessed Land Price by Big Data Mining  

Cho, Tae In (Department of Civil Affairs, Jung-gu Office, Incheon Metropolitan City)
Choi, Byoung Gil (Dept. of Civil and Environmental Engineering, Incheon National University)
Na, Young Woo (Hub-Indestrial-Academic Cooperation, Incheon National University)
Moon, Young Seob (Earth Order & Construction Corp.)
Kim, Se Hun (Dept. of Civil and Environmental Engineering, Incheon National University)
Publication Information
Journal of Cadastre & Land InformatiX / v.48, no.2, 2018 , pp. 79-98 More about this Journal
Abstract
The purpose of this study is to suggest a model analysing spatio-temporal characteristics of the civil complaints for the officially assessed land price based on big data mining. Specifically, in this study, the underlying reasons for the civil complaints were found from the spatio-temporal perspectives, rather than the institutional factors, and a model was suggested monitoring a trend of the occurrence of such complaints. The official documents of 6,481 civil complaints for the officially assessed land price in the district of Jung-gu of Incheon Metropolitan City over the period from 2006 to 2015 along with their temporal and spatial poperties were collected and used for the analysis. Frequencies of major key words were examined by using a text mining method. Correlations among mafor key words were studied through the social network analysis. By calculating term frequency(TF) and term frequency-inverse document frequency(TF-IDF), which correspond to the weighted value of key words, I identified the major key words for the occurrence of the civil complaint for the officially assessed land price. Then the spatio-temporal characteristics of the civil complaints were examined by analysing hot spot based on the statistics of Getis-Ord $Gi^*$. It was found that the characteristic of civil complaints for the officially assessed land price were changing, forming a cluster that is linked spatio-temporally. Using text mining and social network analysis method, we could find out that the occurrence reason of civil complaints for the officially assessed land price could be identified quantitatively based on natural language. TF and TF-IDF, the weighted averages of key words, can be used as main explanatory variables to analyze spatio-temporal characteristics of civil complaints for the officially assessed land price since these statistics are different over time across different regions.
Keywords
Statiotemporal Analysis Model; Big Data Mining; Civil Complaints for the Officially Assessed Land Price; Text Mining; Social Network Analysis;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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