现有的旅行时间预测算法通常是直接对旅行时间进行预测，算法的参数往往都需要大量的实测旅行时间数据来进行辨识。
The existing travel time forecast algorithms always predict the travel time directly, and the algorithm parameters often requires a large amount of real travel time data for identification.
现有的旅行时间预测算法通常是直接对旅行时间进行预测，算法的参数往往都需要大量的实测旅行时间数据来进行辨识。
The existing travel time forecast algorithms always predict the travel time directly, and the algorithm parameters often requires a large amount of real travel time data for identification.
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