The invention discloses a heterogeneous
Internet of Things topology key node identification method in combination with a
mutation theory, and belongs to the field of computers and information, and the method comprises the steps: firstly constructing an
initial topology of a heterogeneous
Internet of Things, generating a topology set through random disturbance, and calculating performance indexes such as robustness, redundancy, communication efficiency and a global
clustering coefficient; then normalizing the indexes by using a
mutation series method, evaluating the correlation between the indexes based on a Pearson's
correlation coefficient, and obtaining a
network performance mutation value through layer-by-layer fusion; simulating a deliberate
attack process, establishing a corresponding relationship between a
node deletion sequence and performance evolution, and fitting to obtain a performance evolution function; and finally, establishing a cuspidal
point mutation model, and identifying critical nodes causing
network performance mutation by analyzing the equilibrium state, the singular set and the bifurcation set of the model, thereby breaking through the limitation of traditional static network indexes, being capable of accurately capturing the mutation behavior of the
network performance, being high in objectivity, and providing a theoretical basis for
topological optimization and fault-tolerant design of
the Internet of Things.