The latest precipitation forecast from the GFS ensemble model predicts the possibility of rains of around 1/2 inch for Shandong Province early next week, but these rains would help only a little.
最新的全球天气预报系统（GFS）预测下周初山东将有1/2（12毫米）英寸降雨的可能，但这对缓解旱情帮助甚微。
However, the precision of GM (1, 1) grey forecast model are not preferable to model the monitoring series with obvious seasonality.
然而直接应用GM(1,1)灰色模型分析和预报具有季节性的监测序列时往往精度不高。
Random and volatile data of road traffic accidents show poor fitness and low accuracy if forecast by means of the traditional grey model GM (1, 1).
采用传统灰色GM(1,1)模型预测道路交通事故这类随机性、波动性较大的数据，存在拟合较差、精度不足等问题。
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