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The study on error, missing data and imputation of the smart card data for the transit OD construction  

Park, Jun-Hwan (서울시정개발연구원)
Kim, Soon-Gwan (서울시정개발연구원)
Cho, Chong-Suk (한국교통연구원)
Heo, Min-Wook (서울시 도로교통시설)
Publication Information
Journal of Korean Society of Transportation / v.26, no.2, 2008 , pp. 109-119 More about this Journal
Abstract
The number of card users has grown steadily after the adaption of smart card. Considering the diverse information from smart card data, the increase of card usage rate leads to various useful implications meaning in travel pattern analysis and transportation policy. One of the most important implications is the possibility that the data enables us to generate transit O/D tables easily. In the case of generating transit O/D tables from smart card data, it is necessary to filter data error and/or data missing. Also, the correction of data missing is an important procedure. In this study, it is examined to compute the level of data error and data missing, and to correct data missing for transit O/D generation.
Keywords
transit; card data; data error; imputation; transit OD;
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