Patent ID: 11861324
Assignee: VISA INTERNATIONAL SERVICE ASSOCIATION
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A computer-implemented method, comprising:
receiving, with at least one processor, at least one embedding set, each embedding set of the at least one embedding set comprising a set of embedding vectors;
applying, with at least one processor, mean centering to the at least one embedding set;
applying, with at least one processor, spectral normalization to the at least one embedding set, wherein applying spectral normalization to the at least one embedding set comprises:
decomposing, with at least one processor, the at least one embedding set to provide a left singular vector, a right singular vector, and a diagonal matrix;
determining, with at least one processor, an average singular value of the at least one embedding set;
for each respective singular value of the diagonal matrix, determining, with at least one processor, whether the respective singular value is greater than a configurable multiple of the average singular value;
for each respective singular value of the diagonal matrix, if the respective singular value is greater than the configurable multiple of the average singular value, determining, with at least one processor, a respective substitute singular value based on a quotient of the respective singular value divided by the configurable multiple of the average singular value or, if the respective singular value is not greater than the configurable multiple of the average singular value, determining, with at least one processor, the respective substitute singular value to be 1, wherein a substitute diagonal matrix comprises the respective substitute singular value for each respective singular value of the diagonal matrix; and
replacing, with at least one processor, the at least one embedding set with a product of the at least one embedding set, the right singular vector, and an inverse of the substitute diagonal matrix; and

applying, with at least one processor, length normalization to the at least one embedding set.