When experts want to predict the price of crude oil, they use a weighted combination of all the models since no one model alone offers an accurate prediction.
当专家想要预测原油的价格，他们会使用所有模型的加权组合，因为没有一个单一的模型能提供准确的预测。
Given the commonly used food production forecast model, with the aid of a weighted combination of prediction model to determine the combination, the prediction accuracy will be improved.
给出了粮食产量预测的常用模型，通过加权组合，进而确定组合预测模型以提高预测精度。
Based on the primary qualitative method, we propose an annual runoff prediction model using weighted sum of wavelet coefficients of major periods to predict the periodic components.
本文在原有定性分析方法的基础上，提出基于年径流时间序列主周期小波系数加权求和预测周期成分的年径流预测模型。
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