提出一种基于过程神经网络的木材生长轮密度长期预测方法。
A long-term forecast method of timber growth ring density based on process neural network was proposed in this paper.
本文研究了基于灰色系统理论模型对珠三角地区航空货邮运量进行短期运量预测和长期影响因素分析。
Based on the model of gray system theory, we forecasted the air cargo traffic at Pearl River Delta and analyzed the long-time influence factors.
对中长期负荷组合预测进行了研究，提出了基于预测有效度最优的原则来求取组合预测加权系数的方案。
The changeable weight combined method is presented based on the principles of forecast effectiveness optimization through study of mid-long load combined forecast.
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