考虑多因素交互作用影响的权重确定

引入岩石工程系统（RES）理论的交互作用矩阵构造和编码原理，提出了一种新的考虑多因素交互作刷影响的权重确定方法。基于改进BP网络推导了新的权重确定方法的算法流程，其网络输入层与隐层间以及各隐层间变换函数采用双曲正切函数S型函数tansig;f（x）=2／（1＋exp（-2x））-1，隐层与输出层间采用logsig函数：f（x）=1／（1＋exp（-x），并采用动量法和自适应学习率相结合训练网络。通过VCR法采场岩爆实例分析，得出了交互作用下岩爆倾向性8个影响因素的作用权重大小，展示了该法的实际应用。

Approach to determine weight considering multi-factors interaction influence

According to the principle of Rock Engineering System(RES)theory's matrix construction and decoding,a new approach to determine weight considering multi-factors interaction influence is suggested.Then,the arithmetic flow of the approach is deduced based on improved BP network,in which the tansig:f(x)=2/(1+exp(-2x))-1 is used as transfer functions between inside layer and input layer,as well as a inside layer and its neighboring layer,yet the logsig:f(x)=1/(1+exp(-x))is used as transfer functions between inside layer and output layer,meanwhile,the momentum method together with self-applied learning rate are applied to training network.As the case in predicting rockburst proneness of VCR stope,the factors' weights and their interaction influence are worked out,which display the approach's application and its effect.