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Missing Data Estimation for Link Travel Time  

Yoon, Won-Sik (아주대학교 전자공학과)
Jung, Hee-Cheol (아주대학교 전자공학과)
Publication Information
Journal of Korean Society of Transportation / v.26, no.2, 2008 , pp. 101-107 More about this Journal
Abstract
Traffic speed data may be missed due to detector malfunction or network problems. In this paper we have proposed effective methods to estimate the data which could not be collected through loop detectors. Our proposed algorithm has three steps. First step is to find the most similar neighbor data record by coefficient of correlation. Second step is to make some data records which is calculated by the 5 kinds of estimation methods. Third step is to compare the data records with history data record of observation link and thus the best method is selected. The proposed method is useful for estimating travel time.
Keywords
Missing data estimation; ITS; Neighbor link; Dual-loop detector; Signal processing;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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