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• W2900680147 endingPage "3633" @default.
• W2900680147 startingPage "3623" @default.
• W2900680147 abstract "Private cars, a class of small motor vehicles usually registered by an individual for personal use, constitute the vast majority of city automobiles and hence significantly affect urban traffic. In particular, private cars tend to stop-and-wait (SAW) in specific regions during daily driving. This SAW behavior produces a spatiotemporal aggregation effect, which facilitates the formation of urban hot zones. In this paper, we investigate the SAW behavior and aggregation effect based on large-scale private car trajectory data. Specifically, motivated by the first law of geography, we leverage the kernel density estimation (KDE) method and extend it to three dimensions to capture the density distribution of the SAW data. Furthermore, according to the inherent relationship between the present SAW density and future SAW aggregation, we propose a 3D-KDE-based prediction model to characterize the dynamic spatiotemporal aggregation effect. In addition, we design a modified inertia weight particle swarm optimization (MIW-PSO) algorithm to determine the optimal weight coefficients and to avoid local optima during SAW prediction. Extensive experiments based on real-world private car SAW data validate the effectiveness of our method for discovering dynamic aggregation effects, therein outperforming the current methods in terms of the Kullback-Leibler (KL) divergence, mean absolute error (MAE), and root mean square error (RMSE). To the best of the authors’ knowledge, our work is the first to utilize private car trajectory data to study the aggregation effect in urban environments, thereby being able to provide new insight into the study of traffic management and the evolution of urban traffic." @default.
• W2900680147 created "2018-11-29" @default.
• W2900680147 creator A5008473103 @default.
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• W2900680147 date "2019-10-01" @default.
• W2900680147 modified "2023-10-18" @default.
• W2900680147 title "Stop-and-Wait: Discover Aggregation Effect Based on Private Car Trajectory Data" @default.
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• W2900680147 doi "https://doi.org/10.1109/tits.2018.2878253" @default.
• W2900680147 hasPublicationYear "2019" @default.
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