There are some problems in modelling karst water circulation using hydrological model as lack of information of groundwater distribution in karst system (black box or grey box).
由于岩溶地下水分布难以量测，岩溶水文系统多为黑箱或灰箱，采用岩溶水文模型量化其水循环过程常存在许多疑难问题。
Study modelling thought, network configuration, majorize GNNM(1,1) mode method and learning algorithm of GNNM(1,1) mode combined grey system theory and neural network.
研究了灰色系统理论与神经网络组合的灰色神经网络GNNM（1，1）模型的建模思想、网络结构及其优化GNNM（1，1）模型的方法和学习算法；
The advantage of the grey modelling is that it can take the effects of many unknown and accidental factors in the river water quality system into consideration.
灰色模拟考虑了实际河流水质系统中客观存在的不确知因素和偶然因素影响。
The advantage of the grey modelling is that it can take the effects of many unknown and accidental factors in the river water quality system into consideration.
灰色模拟考虑了实际河流水质系统中客观存在的不确知因素和偶然因素影响。
应用推荐