求翻译：通过利用简单移动平均法、加权移动平均法、一次指数平滑法、二次指数平滑法对间隔为两分钟的交通流进行预测以及误差分析，得出在选择适当的权数的情况下，二次指数平滑法在短时交通流预测效果上优于其他三种方法。是什么意思？

Through the use of the simple moving average, weighted moving average, exponential smoothing method, the quadratic exponential smoothing interval of two minutes of traffic flow prediction and error analysis, obtained in the case of selecting the appropriate weights, the second exponential smoothing

By using simple moving average, weighted moving average, a exponential smoothing, exponential smoothing law 2 times in a two-minute interval between traffic forecast error analysis, as well as in the selection of appropriate weights, 2 time exponential smoothing methods in a short time on traffic fo

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Through the use of simple moving average, weighted moving average, exponential smoothing methods, secondary exponential smoothing forecasts for every two minutes of traffic flow and error analysis, concluded that in the case of selecting the appropriate weight, quadratic exponential smoothing method

Through the use simple moving average method, the weighting moving average method, index smoothing procedures, two index smoothing procedures are two minute transportation class carry on the forecast as well as the error analysis to the gap, obtains in the choice suitable weight situation, two index