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http://dx.doi.org/10.12815/kits.2013.12.6.010

Combined Filtering Model Using Voting Rule and Median Absolute Deviation for Travel Time Estimation  

Jeong, Youngje (서울시립대학교 교통공학과)
Park, Hyun Suk (한국건설기술연구원)
Kim, Byung Hwa (한국건설기술연구원)
Kim, Youngchan (서울시립대학교 교통공학과)
Publication Information
The Journal of The Korea Institute of Intelligent Transport Systems / v.12, no.6, 2013 , pp. 10-21 More about this Journal
Abstract
This study suggested combined filtering model to eliminate outlier travel time data in transportation information system, and it was based on Median Absolute Deviation and Voting Rule. This model applied Median Absolute Deviation (MAD) method to follow normal distribution as first filtering process. After that, Voting rule is applied to eliminate remaining outlier travel time data after Median Absolute Deviation. In Voting Rule, travel time samples are judged as outliers according to travel-time difference between sample data and mean data. Elimination or not of outliers are determined using a majority rule. In case study of national highway No. 3, combined filtering model selectively eliminated outliers only and could improve accuracy of estimated travel time.
Keywords
Travel Time; Outlier Elimination; Filtering Model; Median Absolute Deviation; Voting Rule;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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