Patent ID: 11921896
Assignee: JPMORGAN CHASE BANK, N.A.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 7:
8. A random sampling-based method for anonymizing a dataset of biometric data, comprising:
receiving, by an anonymization computer program, a value k representing a number of records to hide a biometric datum among, a value t that represents a t-closeness parameter for a t-close distribution, a weight parameter, and a first number of features to retain for determining an attribute of interest;
receiving, by the anonymization computer program, the attribute of interest;
calculating, by the anonymization computer program, a distribution of the attribute of interest in a biometric dataset;
iterating, by the anonymization computer program, through each biometric datum in the biometric dataset to create a k-sized biometric cluster by:
selecting, by the anonymization computer program, a biometric datum from the biometric dataset;
retrieving, by the anonymization computer program, k−1 biometric datums from the biometric dataset to create a k-sized cluster of the selected biometric datum and the k−1 biometric datums such that the k-sized cluster satisfies the t-closeness distribution;
anonymizing, by the anonymization computer program, the selected biometric datum using a weighted average of landmarks for the biometric datums in the k-sized clusters using the weight parameter;
adding, by the anonymization computer program, the anonymized selected biometric datum into an anonymized biometric dataset; and
releasing, by the anonymization computer program, the k−1 biometric datums to the biometric dataset; and

persisting, by anonymization computer program, the anonymized biometric dataset.