The model overcomes the unpredictability due to monotonicity and periodical fluctuation of freight volume. 该模型克服了货运量的单调性和周期波动性给预测带来的困难。
After analyzing the data on railway freight volume of recent years, the authors establish the railway freight volume forecasting model by use of grey theory. 摘要通过对近年全国铁路货运量的统计数据进行分析，运用灰色理论建立了铁路货运量预测模型。
