Key index determination method and device, nonvolatile storage medium and electronic equipment

The invention discloses a key index determination method and device, a nonvolatile storage medium and electronic equipment. The method comprises the following steps: acquiring a communication index data set of a target area; determining a target causal graph corresponding to the communication index data set; a first neural network and a second neural network are constructed according to the target causal graph, the connection mode between all long and short-term memory network layers in the first neural network corresponds to the connection mode between nodes in the target causal graph, and the connection mode between all long and short-term memory network layers in the second neural network is full connection; determining a second screening result according to the first screening result of the trained first neural network and the second screening result of the trained second neural network; and obtaining an intersection of the first screening result and the second screening result to obtain a target screenin