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Efficient traffic congestion estimation using multiple spatio-temporal properties
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DOI：10.1016/j.neucom.2017.06.017.png)
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Traffic estimation is an important issue to analyze the traffic congestion in large-scale urban traffic situations. Recently, many researchers have used GPS data to estimate traffic congestion. However, how to fuse the multiple data reasonably and guarantee the accuracy and efficiency of these methods are still challenging problems. In this paper, we propose a novel method Multiple Data Estimation (MDE) to estimate the congestion status in urban environment with GPS trajectory data efficiently, where we estimate the congestion status of the area through utilizing multiple properties, including density, velocity, inflow and previous status. Among them, traffic inflow and previous status (combination of time and space factors) are not both used in other existing methods. In order to ensure the accuracy and efficiency, we apply dynamic weights of data and parameters in MDE method. To evaluate our methods, we apply it on large-scale taxi GPS data of Beijing and Shanghai. Extensive experiments on these two real-world datasets demonstrate the significant improvements of our method over several state-of-the-art methods. (C) 2017 Elsevier B.V. All rights reserved.
Keyword:
Traffic congestion estimation
Large-scale road networks
Multiple spatio-temporal properties
Dynamic weight calculation
GPS data
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6.5
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2.5W
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6.5W
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