The invention provides a dynamic graph federal learning method for cross-line network
urban rail passenger flow prediction, which comprises the following steps: preprocessing local automatic fare collection data of a
client to obtain a local
signal graph, and constructing and compressing an
urban rail passenger flow dynamic space association graph of the
client; local passenger flow mode space features of the
urban rail passenger flow dynamic space association diagrams of all the clients are extracted and uploaded to a
server for aggregation, so that a global urban
rail network passenger flow dynamic space-time diagram is constructed, local
model parameters of the clients are trained and optimized, and the local
model parameters are uploaded to the
server for aggregation; and according to an aggregation result of the local
model parameters, the
client updates the local model parameters and completes training of a local
time sequence prediction model, so that the urban
rail line network passenger flow is predicted, through a
federated learning framework, AFC data leakage risks are avoided, cross-line
global information is fully utilized, the passenger flow prediction accuracy is improved, cross-line communication overhead is greatly reduced, and the urban
rail line network passenger flow prediction efficiency is improved. The real-time prediction efficiency is improved, and a reliable basis is provided for global urban
rail network operation and
train shift scheduling.