高速公路交通量的预测是管理部门研究的重要内容,为交通控制和诱导提供数据支撑。针对高速公路交通量的预测问题,引入一种新的基于双向长短期记忆网络(Bidirectional Long Short Time Memory Network,Bi-LSTM)的方法。Bi-LSTM模型将普通...高速公路交通量的预测是管理部门研究的重要内容,为交通控制和诱导提供数据支撑。针对高速公路交通量的预测问题,引入一种新的基于双向长短期记忆网络(Bidirectional Long Short Time Memory Network,Bi-LSTM)的方法。Bi-LSTM模型将普通的LSTM拆分成为两个方向,前向计算关联历史数据,后向计算关联未来数据,两个方向LSTM不直接连通,将两份数据整合输出作为Bi-LSTM计算单元输出值。实验表明,Bi-LSTM模型相比对比模型预测误差至少优化了4.5%,在非线性交通流数据中具有更好的预测性能和泛化能力。展开更多
This paper uses Gaussian interval type-2 fuzzy se theory on historical traffic volume data processing to obtain a 24-hour prediction of traffic volume with high precision. A K-means clustering method is used in this p...This paper uses Gaussian interval type-2 fuzzy se theory on historical traffic volume data processing to obtain a 24-hour prediction of traffic volume with high precision. A K-means clustering method is used in this paper to get 5 minutes traffic volume variation as input data for the Gaussian interval type-2 fuzzy sets which can reflect the distribution of historical traffic volume in one statistical period. Moreover, the cluster with the largest collection of data obtained by K-means clustering method is calculated to get the key parameters of type-2 fuzzy sets, mean and standard deviation of the Gaussian membership function.Using the range of data as the input of Gaussian interval type-2 fuzzy sets leads to the range of traffic volume forecasting output with the ability of describing the possible range of the traffic volume as well as the traffic volume prediction data with high accuracy. The simulation results show that the average relative error is reduced to 8% based on the combined K-means Gaussian interval type-2 fuzzy sets forecasting method. The fluctuation range in terms of an upper and a lower forecasting traffic volume completely envelopes the actual traffic volume and reproduces the fluctuation range of traffic flow.展开更多
文摘高速公路交通量的预测是管理部门研究的重要内容,为交通控制和诱导提供数据支撑。针对高速公路交通量的预测问题,引入一种新的基于双向长短期记忆网络(Bidirectional Long Short Time Memory Network,Bi-LSTM)的方法。Bi-LSTM模型将普通的LSTM拆分成为两个方向,前向计算关联历史数据,后向计算关联未来数据,两个方向LSTM不直接连通,将两份数据整合输出作为Bi-LSTM计算单元输出值。实验表明,Bi-LSTM模型相比对比模型预测误差至少优化了4.5%,在非线性交通流数据中具有更好的预测性能和泛化能力。
基金supported by the National Key Research and Development Program of China(2018YFB1201500)
文摘This paper uses Gaussian interval type-2 fuzzy se theory on historical traffic volume data processing to obtain a 24-hour prediction of traffic volume with high precision. A K-means clustering method is used in this paper to get 5 minutes traffic volume variation as input data for the Gaussian interval type-2 fuzzy sets which can reflect the distribution of historical traffic volume in one statistical period. Moreover, the cluster with the largest collection of data obtained by K-means clustering method is calculated to get the key parameters of type-2 fuzzy sets, mean and standard deviation of the Gaussian membership function.Using the range of data as the input of Gaussian interval type-2 fuzzy sets leads to the range of traffic volume forecasting output with the ability of describing the possible range of the traffic volume as well as the traffic volume prediction data with high accuracy. The simulation results show that the average relative error is reduced to 8% based on the combined K-means Gaussian interval type-2 fuzzy sets forecasting method. The fluctuation range in terms of an upper and a lower forecasting traffic volume completely envelopes the actual traffic volume and reproduces the fluctuation range of traffic flow.
