Patent ID: 11941553
Assignee: HEFEI UNIVERSITY OF TECHNOLOGY
Field: IT methods for management (Electrical engineering)
Classification: CPC G | IPC G

Claim 7:
8. The method of claim 7, wherein to prevent a position update of the sparrow in a later stage of the iteration from falling into a local optimum, an adaptive t distribution variation strategy is adopted for the position of the sparrow:

{dot over (X)}y,j*={dot over (X)}y,j+{dot over (X)}y,j×t(M)

{umlaut over (X)}z,j*={umlaut over (X)}z,j+{umlaut over (X)}z,j×t(M)

k,j*=k,j+k,j×t(M)

where, t(M) indicates a t distribution with an iteration number S as a freedom level;
{dot over (X)}y,j* indicates a position occupied by a yth discoverer in the jth dimension after the variation; {dot over (X)}y,j indicates a position occupied by a zth discoverer in the jth dimension;
{umlaut over (X)}z,j* indicates a position occupied by the zth follower in the jth dimension after the variation, and {umlaut over (X)}z,j indicates a position occupied by the zth follower in the jth dimension;
k,j* indicates a position occupied by the kth vigilante in the jth dimension after the variation, and k,j indicates a position occupied by the kth vigilante in the jth dimension.