Traffic Speed Time Series Short Term Forecasting Using Aggregated Model

Jian Gu; Shu Yan Chen

doi:10.4028/www.scientific.net/AMM.587-589.2057

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 587-589Traffic Speed Time Series Short Term Forecasting...

Traffic Speed Time Series Short Term Forecasting Using Aggregated Model

Abstract:

This paper integrated superiority from time series model and least square support vector machine regression model with data aggregation for traffic speed short term forecasting. Based on the results of traffic data variations analysis, the practicability that speed data can be aggregated to several periods was confirmed, and aggregated model can be developed to forecast the speed with auto regression (AR) model and support vector machine regression (SVR). Then the speed data in case study were integrated to 4 periods at the location of Remote Traffic Microwave Sensors (RTMS) 2047 on 2^nd Ring Road Expressway in Beijing. Arguments with coefficients from AR models then act as the independent variables of LSSVR in aggregated model. Short term traffic speed was predicted by aggregated model, and the results indicated that taking advantages of time periods variation rule inside the aggregated model would help save the model running time cost under the premise of accuracy with better prediction ability than LSSVR in certain conditions.

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Periodical:

Applied Mechanics and Materials (Volumes 587-589)

Pages:

2057-2062

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.587-589.2057

Citation:

Cite this paper

Online since:

July 2014

Authors:

Jian Gu*, Shu Yan Chen

Keywords:

Auto Regression Model, Short Term Forecasting, Support Vector Machine Regression, Urban Traffic

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* - Corresponding Author

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