The invention discloses a real-time
traffic flow abnormal
event tracing method and
system based on edge calculation, and the method comprises the steps: obtaining
traffic flow data of edge nodes, analyzing the
dynamic impedance of a road segment according to the
traffic flow data, calculating the path selection probability of each path through employing an abnormal event wave proportion, extracting a traffic flow abnormal road segment, and carrying out the tracing of the traffic flow abnormal event. And performing spatial overlapping analysis on the abnormal road sections according to the path selection probability, matching the traffic event announcement
root cause and the meteorological early warning
root cause based on the association strength of each abnormal road section, generating an
optimal matching root cause through a maximum weight bisection matching
algorithm, and tracing the upstream traffic flow by using the
optimal matching root cause and the path selection probability. According to the method,
dynamic impedance analysis, SIR propagation
simulation and Shapley value are utilized to quantify the contribution degree of the root cause to the abnormal road section, full-link
traceability of the root cause, the path and the upstream node is formed, relatively
complete data support is provided for traffic abnormity
diffusion caused by traffic abnormity and meteorological abnormity, and the practicability and decision value of a
traceability result are improved.